diff --git a/reactos/lib/crt/misc/environ.c b/reactos/lib/crt/misc/environ.c
index 07b36fb035b..02f83455769 100644
--- a/reactos/lib/crt/misc/environ.c
+++ b/reactos/lib/crt/misc/environ.c
@@ -259,7 +259,7 @@ int SetEnv(const wchar_t *option)
       if (!found)
       {
          free(name);
-         return -1;
+         return 0;
       }
 
       /* Remove the option from wide character environment. */