diff --git a/gen/generator.go b/gen/generator.go
index 1257b44..f5b5b7a 100644
--- a/gen/generator.go
+++ b/gen/generator.go
@@ -213,7 +213,12 @@ func fixPkgPathVendoring(pkgPath string) string {
 }
 
 func fixAliasName(alias string) string {
-	alias = strings.Replace(alias, "-", "", -1)
+	alias = strings.Replace(
+		strings.Replace(path.Base(pkgPath), ".", "_", -1),
+		"-",
+		"_",
+		-1,
+	)
 	return alias
 }