diff --git a/gpg-interface.c b/gpg-interface.c
index 62d340e78a..3838536f0a 100644
--- a/gpg-interface.c
+++ b/gpg-interface.c
@@ -409,9 +409,9 @@ static void parse_ssh_output(struct signature_check *sigc)
 		goto cleanup;
 	}
 
-	key = strstr(line, "key");
+	key = strstr(line, "key ");
 	if (key) {
-		sigc->fingerprint = xstrdup(strstr(line, "key") + 4);
+		sigc->fingerprint = xstrdup(strstr(line, "key ") + 4);
 		sigc->key = xstrdup(sigc->fingerprint);
 	} else {
 		/*