diff --git a/main.c b/main.c
index 79f59f740ed4ea75c1935cc2ad8464ca494cc0e8..5d0283ed697b173df58fd6808da4df0dea33cec2 100644
--- a/main.c
+++ b/main.c
@@ -454,9 +454,9 @@ NX_PRIVATE NX_Error ReadCmd(int termFd, char *cmd, int cmdlen)
         switch (ch)
         {
         case '\t':
-            int i;
+            
             /* move the cursor to the beginning of line */
-            for (i = 0; i < lineCurpos; i++)
+            for (int i = 0; i < lineCurpos; i++)
                 NX_Printf("\b");
 
             /* auto complete */