diff --git a/diff.c b/diff.c
index 97cc5bc085b..a7e76719d12 100644
--- a/diff.c
+++ b/diff.c
@@ -2919,10 +2919,6 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
 				fill_mmfile(&mf2, p->two) < 0)
 			return error("unable to read files to diff");
 
-		/* Maybe hash p->two? into the patch id? */
-		if (diff_filespec_is_binary(p->two))
-			continue;
-
 		len1 = remove_space(p->one->path, strlen(p->one->path));
 		len2 = remove_space(p->two->path, strlen(p->two->path));
 		if (p->one->mode == 0)