diff --git a/cmd/wails/3_build.go b/cmd/wails/3_build.go
index bf301241..7b553876 100644
--- a/cmd/wails/3_build.go
+++ b/cmd/wails/3_build.go
@@ -215,7 +215,7 @@ func init() {
 
 		// If we are forcing a rebuild
 		if forceRebuild {
-			buildCommand.Add(" -a")
+			buildCommand.Add("-a")
 		}
 
 		// Release mode