diff --git a/platform/os2.c b/platform/os2.c
index ee6471e..0ade46b 100644
--- a/platform/os2.c
+++ b/platform/os2.c
@@ -243,7 +243,7 @@ int __PHYSFS_platformInit(void)
     {
         if (buf[len] == '\\')
         {
-            buf[++len] = '\0';
+            buf[len] = '\0';
             break;
         } /* if */
     } /* for */