diff --git a/nvm.sh b/nvm.sh
index be3d1ab..9ae9ad9 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -38,7 +38,7 @@ nvm_version()
         return
     fi
     if [ ! "$VERSION" ]; then
-        VERSION=`(cd $NVM_DIR; \ls -d v${PATTERN}* 2>/dev/null) | sort -t. -k 2,1n -k 2,2n -k 3,3n | tail -n1`
+        VERSION=`(cd $NVM_DIR; \ls -d v${PATTERN}* 2>/dev/null) | sort -t. -k 1.2,1n -k 2,2n -k 3,3n | tail -n1`
     fi
     if [ ! "$VERSION" ]; then
         echo "N/A"