diff --git a/sxbm b/sxbm
index 6de095e..eee4f56 100755
--- a/sxbm
+++ b/sxbm
@@ -97,8 +97,8 @@ bm_list(){
     case "$1" in
       +*)
         [ -z "$QUERY_TAG" ] &&
-          QUERY_TAG="/[[:space:]]\\$1[[:space:]]/" ||
-          QUERY_TAG="${QUERY_TAG} $QUERY_STRICT /[[:space:]]\\$1[[:space:]]/"
+          QUERY_TAG="/[[:blank:]]\\$1($| )/" ||
+          QUERY_TAG="${QUERY_TAG} $QUERY_STRICT /[[:blank:]]\\$1($| )/"
         shift
         ;;
       *)