diff --git a/revision.c b/revision.c
index 286e416..556c319 100644
--- a/revision.c
+++ b/revision.c
@@ -1144,7 +1144,7 @@
 	} else if (!strcmp(arg, "--pretty")) {
 		revs->verbose_header = 1;
 		get_commit_format(arg+8, revs);
-	} else if (!prefixcmp(arg, "--pretty=")) {
+	} else if (!prefixcmp(arg, "--pretty=") || !prefixcmp(arg, "--format=")) {
 		revs->verbose_header = 1;
 		get_commit_format(arg+9, revs);
 	} else if (!strcmp(arg, "--graph")) {