diff --git a/collection/skipmap/types.go b/collection/skipmap/types.go
index 91d46a32..497c564f 100644
--- a/collection/skipmap/types.go
+++ b/collection/skipmap/types.go
@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Code generated by go run types_gen.go; DO NOT EDIT.
 // Code generated by go run types_gen.go; DO NOT EDIT.
 package skipmap
 
diff --git a/collection/skipmap/types_gen.go b/collection/skipmap/types_gen.go
index c89ecded..d3090d11 100644
--- a/collection/skipmap/types_gen.go
+++ b/collection/skipmap/types_gen.go
@@ -49,7 +49,7 @@ func main() {
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Code generated by go run types_gen.go; DO NOT EDIT.` + "\r\n")
+`)
 	// Step 1. Add file header
 	w.WriteString(`// Code generated by go run types_gen.go; DO NOT EDIT.` + "\r\n")
 	// Step 2. Add imports and package statement
diff --git a/collection/skipset/types.go b/collection/skipset/types.go
index 2ead6a29..4c6cb9c4 100644
--- a/collection/skipset/types.go
+++ b/collection/skipset/types.go
@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Code generated by go run types_gen.go; DO NOT EDIT.
 // Code generated by go run types_gen.go; DO NOT EDIT.
 package skipset
 
diff --git a/collection/skipset/types_gen.go b/collection/skipset/types_gen.go
index 18537fd4..353c2437 100644
--- a/collection/skipset/types_gen.go
+++ b/collection/skipset/types_gen.go
@@ -49,7 +49,7 @@ func main() {
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Code generated by go run types_gen.go; DO NOT EDIT.` + "\r\n")
+`)
 	// Step 1. Add file header
 	w.WriteString(`// Code generated by go run types_gen.go; DO NOT EDIT.` + "\r\n")
 	// Step 2. Add imports and package statement