diff --git a/frontend/dockerfile/dockerfile2llb/convert.go b/frontend/dockerfile/dockerfile2llb/convert.go
index 6a163c73971c2..c7f501fe15d1c 100644
--- a/frontend/dockerfile/dockerfile2llb/convert.go
+++ b/frontend/dockerfile/dockerfile2llb/convert.go
@@ -1319,6 +1319,12 @@ func dispatchCopy(d *dispatchState, cfg copyConfig) error {
 		return err
 	}
 
+	// handle case for "." path
+	// using "/" since paths already nomalized to UNIX style
+	if cfg.params.DestPath == "." {
+		dest += "/"
+	}
+
 	var copyOpt []llb.CopyOption
 
 	if cfg.chown != "" {