diff --git a/doWITCOM.go b/doWITCOM.go
index c5e8ddc..c68408a 100644
--- a/doWITCOM.go
+++ b/doWITCOM.go
@@ -103,6 +103,9 @@ func scanForGoFiles(startDir string) ([]string, error) {
 		if strings.HasSuffix(path, ".go") {
 			files = append(files, path)
 		}
+		if strings.HasSuffix(path, ".proto") {
+			files = append(files, path)
+		}
 
 		// don't go into any directories
 		if info.IsDir() {