diff --git a/builtin/log.c b/builtin/log.c
index d104d5c688..281d2ae8eb 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -731,10 +731,6 @@ static void log_setup_revisions_tweak(struct rev_info *rev,
 	/* Turn --cc/-c into -p --cc/-c when -p was not given */
 	if (!rev->diffopt.output_format && rev->combine_merges)
 		rev->diffopt.output_format = DIFF_FORMAT_PATCH;
-
-	/* Turn -m on when --cc/-c was given */
-	if (rev->combine_merges)
-		rev->ignore_merges = 0;
 }
 
 int cmd_log(int argc, const char **argv, const char *prefix)