diff --git a/v2/cmd/wails/internal/commands/dev/dev.go b/v2/cmd/wails/internal/commands/dev/dev.go
index 169c61687..c8d23f5ec 100644
--- a/v2/cmd/wails/internal/commands/dev/dev.go
+++ b/v2/cmd/wails/internal/commands/dev/dev.go
@@ -309,6 +309,7 @@ func loadAndMergeProjectConfig(cwd string, flags *devFlags) (*project.Project, e
 
 	if flags.assetDir != projectConfig.AssetDirectory {
 		projectConfig.AssetDirectory = filepath.ToSlash(flags.assetDir)
+		shouldSaveConfig = true
 	}
 
 	if flags.assetDir != "" {