diff --git a/afsk/main.c b/afsk/main.c
index 0df2edc9..4104d561 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -304,7 +304,7 @@ int main(int argc, char *argv[]) {
       
  while (loop-- != 0)
   {
-    if (cycle)
+    if (cycle == ON)
     	mode = (++mode) % 3;
 	 
   if (mode == FSK) {