diff --git a/semtag b/semtag
index 92d8c6a..b9538c7 100755
--- a/semtag
+++ b/semtag
@@ -378,7 +378,7 @@ function increase_version {
     fi
 
     # If we are forcing a bump, we add bump to the commit list
-    if [ -z $__commitlist ] && [ "$forcetag" == "true" ]; then
+    if [[ -z $__commitlist && "$forcetag" == "true" ]]; then
       __commitlist="bump"
     fi