diff --git a/bp2build/conversion.go b/bp2build/conversion.go
index 522c10e..4d8b8a4 100644
--- a/bp2build/conversion.go
+++ b/bp2build/conversion.go
@@ -97,7 +97,7 @@
 		targets.sort()
 
 		var content string
-		if mode == Bp2Build {
+		if mode == Bp2Build || mode == ApiBp2build {
 			content = `# READ THIS FIRST:
 # This file was automatically generated by bp2build for the Bazel migration project.
 # Feel free to edit or test it, but do *not* check it into your version control system.