diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..3716411
--- /dev/null
+++ b/go.mod
@@ -0,0 +1 @@
+module q5
diff --git a/strutils.go b/strutils.go
index b9fa136..9b1750d 100644
--- a/strutils.go
+++ b/strutils.go
@@ -1,6 +1,6 @@
 package q5
 
 func Test()(a string) {
-	return "testa"
+	return "testb"
 }