diff --git a/bp2build/metrics.go b/bp2build/metrics.go
index bd21629..f3ea2cd 100644
--- a/bp2build/metrics.go
+++ b/bp2build/metrics.go
@@ -173,6 +173,10 @@
 )
 
 func (metrics *CodegenMetrics) AddConvertedModule(m blueprint.Module, moduleType string, dir string, conversionType ConversionType) {
+	//a package module has empty name
+	if moduleType == "package" {
+		return
+	}
 	// Undo prebuilt_ module name prefix modifications
 	moduleName := android.RemoveOptionalPrebuiltPrefix(m.Name())
 	metrics.serialized.ConvertedModules = append(metrics.serialized.ConvertedModules, moduleName)