1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclStubInit.c b/generic/tclStubInit.c
index fedce5e..8b6e22b 100644
--- a/generic/tclStubInit.c
+++ b/generic/tclStubInit.c
@@ -125,7 +125,7 @@ TclWinSetSockOpt(void *s, int level, int optname,
 
 static int
 TclWinGetSockOpt(void *s, int level, int optname,
-	    char *optval, int optlen)
+	    char *optval, int *optlen)
 {
     return getsockopt((int) s, level, optname, optval, optlen);
 }