diff --git a/nvm.sh b/nvm.sh
index 30eb9eb..825d68b 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -98,7 +98,7 @@ nvm_format_version() {
 }
 
 nvm_strip_path() {
-  echo $1 | sed -E "s#$NVM_DIR/[^/]*$2[^:]*:?##g"
+  echo "$1" | sed -E "s#$NVM_DIR/[^/]*$2[^:]*:?##g"
 }
 
 nvm_binary_available() {