diff --git a/src/internal.c b/src/internal.c
index 45029923d..5f2f8ab96 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -17007,7 +17007,7 @@ int wolfSSH_CleanPath(WOLFSSH* ssh, char* in)
     /* remove any /./ patterns, direcotries, exclude cases like ./ok./test */
     for (i = 1; i + 1 < sz; i++) {
         if (path[i] == '.' && path[i - 1] == WS_DELIM && path[i + 1] == WS_DELIM) {
-            WMEMMOVE(path + (i-1), path + (i+1), sz - (i-1));
+            WMEMMOVE(path + (i-1), path + (i+1), sz - i);
             sz -= 2; /* removed '/.' from string*/
             i--;
         }