diff --git a/make/Makefile.common b/make/Makefile.common
index cef3133..c939903 100644
--- a/make/Makefile.common
+++ b/make/Makefile.common
@@ -18,7 +18,7 @@ MovieNight: *.go common/*.go
 	GOOS=${GOOS} GOARCH=${ARCH} go$(GO_VERSION) build -o MovieNight${EXT} $(TAGS) 
 
 static/js/wasm_exec.js: 
-	cp $$(go env GOROOT)/misc/wasm/wasm_exec.js $@
+	cp $$(go$(GO_VERSION) env GOROOT)/misc/wasm/wasm_exec.js $@
 
 static/main.wasm: static/js/wasm_exec.js wasm/*.go common/*.go 
 	GOOS=js GOARCH=wasm go$(GO_VERSION) build -o $@ $(TAGS) wasm/*.go