diff --git a/plugins/artdirect/ls.artdirect.js b/plugins/artdirect/ls.artdirect.js
index 3c348507..23a138fb 100644
--- a/plugins/artdirect/ls.artdirect.js
+++ b/plugins/artdirect/ls.artdirect.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/aspectratio/ls.aspectratio.js b/plugins/aspectratio/ls.aspectratio.js
index b22e7f69..74c8dbd6 100644
--- a/plugins/aspectratio/ls.aspectratio.js
+++ b/plugins/aspectratio/ls.aspectratio.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/attrchange/ls.attrchange.js b/plugins/attrchange/ls.attrchange.js
index 14bcb54d..0ed15739 100644
--- a/plugins/attrchange/ls.attrchange.js
+++ b/plugins/attrchange/ls.attrchange.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/bgset/ls.bgset.js b/plugins/bgset/ls.bgset.js
index d4f3a691..aa000df9 100644
--- a/plugins/bgset/ls.bgset.js
+++ b/plugins/bgset/ls.bgset.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/blur-up/ls.blur-up.js b/plugins/blur-up/ls.blur-up.js
index fa75a611..f4eb1384 100644
--- a/plugins/blur-up/ls.blur-up.js
+++ b/plugins/blur-up/ls.blur-up.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/custommedia/ls.custommedia.js b/plugins/custommedia/ls.custommedia.js
index cdea7dd7..a67b69f0 100644
--- a/plugins/custommedia/ls.custommedia.js
+++ b/plugins/custommedia/ls.custommedia.js
@@ -14,6 +14,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/fix-edge-h-descriptor/ls.fix-edge-h-descriptor.js b/plugins/fix-edge-h-descriptor/ls.fix-edge-h-descriptor.js
index 05c1e6c8..51aaeba2 100644
--- a/plugins/fix-edge-h-descriptor/ls.fix-edge-h-descriptor.js
+++ b/plugins/fix-edge-h-descriptor/ls.fix-edge-h-descriptor.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/fix-ios-sizes/fix-ios-sizes.js b/plugins/fix-ios-sizes/fix-ios-sizes.js
index 70bd45aa..e322521e 100644
--- a/plugins/fix-ios-sizes/fix-ios-sizes.js
+++ b/plugins/fix-ios-sizes/fix-ios-sizes.js
@@ -24,6 +24,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/include/ls.include.js b/plugins/include/ls.include.js
index a152a4b8..8a1d5898 100644
--- a/plugins/include/ls.include.js
+++ b/plugins/include/ls.include.js
@@ -12,6 +12,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/native-loading/ls.native-loading.js b/plugins/native-loading/ls.native-loading.js
index b303f5e3..3eef77b2 100644
--- a/plugins/native-loading/ls.native-loading.js
+++ b/plugins/native-loading/ls.native-loading.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/noscript/ls.noscript.js b/plugins/noscript/ls.noscript.js
index dfe20e48..f3eac402 100644
--- a/plugins/noscript/ls.noscript.js
+++ b/plugins/noscript/ls.noscript.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/object-fit/ls.object-fit.js b/plugins/object-fit/ls.object-fit.js
index 9b83be13..162f1afe 100644
--- a/plugins/object-fit/ls.object-fit.js
+++ b/plugins/object-fit/ls.object-fit.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/optimumx/ls.optimumx.js b/plugins/optimumx/ls.optimumx.js
index 2d475ea6..6f4657b3 100644
--- a/plugins/optimumx/ls.optimumx.js
+++ b/plugins/optimumx/ls.optimumx.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/parent-fit/ls.parent-fit.js b/plugins/parent-fit/ls.parent-fit.js
index 9521961f..34e21fd8 100644
--- a/plugins/parent-fit/ls.parent-fit.js
+++ b/plugins/parent-fit/ls.parent-fit.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/print/ls.print.js b/plugins/print/ls.print.js
index 562a19d0..7aeaaaf5 100644
--- a/plugins/print/ls.print.js
+++ b/plugins/print/ls.print.js
@@ -12,6 +12,8 @@ In case the user starts to print lazysizes will load all images.
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/progressive/ls.progressive.js b/plugins/progressive/ls.progressive.js
index 580bf186..b854cb31 100644
--- a/plugins/progressive/ls.progressive.js
+++ b/plugins/progressive/ls.progressive.js
@@ -11,6 +11,8 @@ This lazysizes plugin optimizes perceived performance by adding better support f
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/respimg/ls.respimg.js b/plugins/respimg/ls.respimg.js
index 4fdcb452..4d38aeed 100644
--- a/plugins/respimg/ls.respimg.js
+++ b/plugins/respimg/ls.respimg.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/rias/ls.rias.js b/plugins/rias/ls.rias.js
index 3a8a4f69..5584e419 100644
--- a/plugins/rias/ls.rias.js
+++ b/plugins/rias/ls.rias.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/static-gecko-picture/ls.static-gecko-picture.js b/plugins/static-gecko-picture/ls.static-gecko-picture.js
index b99f9f88..aee7de72 100644
--- a/plugins/static-gecko-picture/ls.static-gecko-picture.js
+++ b/plugins/static-gecko-picture/ls.static-gecko-picture.js
@@ -11,6 +11,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/twitter/ls.twitter.js b/plugins/twitter/ls.twitter.js
index 27fa9f39..e9f615c3 100644
--- a/plugins/twitter/ls.twitter.js
+++ b/plugins/twitter/ls.twitter.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/unload/ls.unload.js b/plugins/unload/ls.unload.js
index 9c52daea..ee0d3a5a 100644
--- a/plugins/unload/ls.unload.js
+++ b/plugins/unload/ls.unload.js
@@ -8,6 +8,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/unveilhooks/ls.unveilhooks.js b/plugins/unveilhooks/ls.unveilhooks.js
index 1f2189f1..6675f1ac 100644
--- a/plugins/unveilhooks/ls.unveilhooks.js
+++ b/plugins/unveilhooks/ls.unveilhooks.js
@@ -42,6 +42,8 @@ For background images, use data-bg attribute:
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {
diff --git a/plugins/video-embed/ls.video-embed.js b/plugins/video-embed/ls.video-embed.js
index 8a0d6e7f..18430f3d 100644
--- a/plugins/video-embed/ls.video-embed.js
+++ b/plugins/video-embed/ls.video-embed.js
@@ -9,6 +9,8 @@
 
 	if(typeof module == 'object' && module.exports){
 		factory(require('lazysizes'));
+	} else if (typeof define == 'function' && define.amd) {
+		require(['lazysizes'], factory);
 	} else if(window.lazySizes) {
 		globalInstall();
 	} else {