diff --git a/nvm.sh b/nvm.sh
index ce8bba56a1..2c37a5c901 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -1253,7 +1253,9 @@ nvm_alias() {
     nvm_err 'An alias is required.'
     return 1
   fi
-  ALIAS="$(nvm_normalize_lts "${ALIAS}")"
+  if ! ALIAS="$(nvm_normalize_lts "${ALIAS}")"; then
+    return $?
+  fi
 
   if [ -z "${ALIAS}" ]; then
     return 2
@@ -1656,7 +1658,9 @@ $VERSION_LIST
 EOF
 
   if [ -n "${LTS-}" ]; then
-    LTS="$(nvm_normalize_lts "lts/${LTS}")"
+    if ! LTS="$(nvm_normalize_lts "lts/${LTS}")"; then
+      return $?
+    fi
     LTS="${LTS#lts/}"
   fi
 
diff --git a/test/fast/Unit tests/nvm install with nonlowercase LTS name b/test/fast/Unit tests/nvm install with nonlowercase LTS name
new file mode 100755
index 0000000000..c79b4a0f99
--- /dev/null
+++ b/test/fast/Unit tests/nvm install with nonlowercase LTS name	
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+die () { echo "$@" ; exit 1; }
+
+\. ../../../nvm.sh
+
+REMOTE="${PWD}/mocks/nvm_ls_remote.txt"
+nvm_ls_remote() {
+  cat "${REMOTE}"
+}
+REMOTE_IOJS="${PWD}/mocks/nvm_ls_remote_iojs.txt"
+nvm_ls_remote_iojs() {
+  cat "${REMOTE_IOJS}"
+}
+ACTUAL="$(nvm install -b "${VERSION}" 2>&1)"
+if [ $? -ne 3 ]; then
+  die "Expected exit code of 3, got $?"
+fi
+
+EXPECTED='LTS names must be lowercase'
+
+[ "${ACTUAL}" = "${EXPECTED}" ] || die "Expected >${EXPECTED}<, got >${ACTUAL}<"
diff --git a/test/fast/Unit tests/nvm ls-remote b/test/fast/Unit tests/nvm ls-remote
index 0c65bfb57f..5b1a4daa98 100755
--- a/test/fast/Unit tests/nvm ls-remote	
+++ b/test/fast/Unit tests/nvm ls-remote	
@@ -70,4 +70,10 @@ OUTPUT="$(nvm ls-remote | sed 's/[ \t]*$//')"
 EXPECTED_OUTPUT="$(cat "${EXPECTED_OUTPUT_PATH}" | sed 's/[ \t]*$//' )"
 [ "_${OUTPUT}" = "_${EXPECTED_OUTPUT}" ] || die "bare nvm ls-remote did not output expected sorted versions; got >${OUTPUT}< expected >${EXPECTED_OUTPUT}<"
 
+if OUTPUT="$(nvm ls-remote lts/ARGON 2>&1)"; then
+  die "nvm ls-remote lts/ARGON did not exit nonzero, got '$?'"
+fi
+EXPECTED_OUTPUT='LTS names must be lowercase'
+[ "_${OUTPUT}" = "_${EXPECTED_OUTPUT}" ] || die "nvm ls-remote lts/ARGON did not output expected error message; got >${OUTPUT}< expected >${EXPECTED_OUTPUT}<"
+
 cleanup