diff --git a/lib/schema/uuid.js b/lib/schema/uuid.js
index 37906e3c4f..1fbfc38654 100644
--- a/lib/schema/uuid.js
+++ b/lib/schema/uuid.js
@@ -54,7 +54,7 @@ function binaryToString(uuidBin) {
   // i(hasezoey) dont quite know why, but "uuidBin" may sometimes also be the already processed string
   let hex;
   if (typeof uuidBin !== 'string' && uuidBin != null) {
-    hex = uuidBin != null && uuidBin.toString('hex');
+    hex = uuidBin.toString('hex');
     const uuidStr = hex.substring(0, 8) + '-' + hex.substring(8, 8 + 4) + '-' + hex.substring(12, 12 + 4) + '-' + hex.substring(16, 16 + 4) + '-' + hex.substring(20, 20 + 12);
     return uuidStr;
   }