diff --git a/scripts/upgrade b/scripts/upgrade
index aa5ac43..e31a779 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -101,7 +101,7 @@ then
 	ynh_script_progression --message="Upgrading source files..."
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	if git -C "$final_path" rev-parse --is-inside-work-tree` >/dev/null 2>/dev/null
+	if git -C "$final_path" rev-parse --is-inside-work-tree >/dev/null 2>/dev/null
 	then
 		pushd "$final_path"
 			git fetch