diff --git a/zsnes/src/gui/guiwindp.inc b/zsnes/src/gui/guiwindp.inc
index 18f29615..286ff939 100644
--- a/zsnes/src/gui/guiwindp.inc
+++ b/zsnes/src/gui/guiwindp.inc
@@ -3819,7 +3819,7 @@ DisplayNetOptns:
 %endif
 .nomodem
     GUIDrawWindowBox 8,GUINetDisp
-    cmp byte[per2exec],99
+    cmp byte[per2exec],100
     jne near DisplayNetOptnsInvalid
 
     cmp byte[CNetType],22