diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 951624233..3d013a7d6 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -164,7 +164,7 @@ sub read_repo_config {
 
 our @mergerx = ();
 if ($opt_m) {
-	@mergerx = ( qr/\b(?:from|of|merge|merging|merged) (\w+)/i );
+	@mergerx = ( qr/\b(?:from|of|merge|merging|merged) ([-\w]+)/i );
 }
 if ($opt_M) {
 	push (@mergerx, qr/$opt_M/);