diff --git a/hiredis.c b/hiredis.c
index 36ee6d9..a2d8515 100644
--- a/hiredis.c
+++ b/hiredis.c
@@ -564,7 +564,7 @@ int redisvFormatCommand(char **target, const char *format, va_list ap) {
                 interpolated = 1;
                 break;
             case '%':
-                cmd = sdscat(cmd,"%");
+                current = sdscat(current,"%");
                 break;
             }
             c++;
diff --git a/test.c b/test.c
index e8289ba..eb7790b 100644
--- a/test.c
+++ b/test.c
@@ -65,6 +65,12 @@ static void test_format_commands() {
         len == 4+4+(3+2)+4+(3+2)+4+(0+2));
     free(cmd);
 
+    test("Format command with literal %%: ");
+    len = redisFormatCommand(&cmd,"SET %% %%");
+    test_cond(strncmp(cmd,"*3\r\n$3\r\nSET\r\n$1\r\n%\r\n$1\r\n%\r\n",len) == 0 &&
+        len == 4+4+(3+2)+4+(1+2)+4+(1+2));
+    free(cmd);
+
     const char *argv[3];
     argv[0] = "SET";
     argv[1] = "foo";