diff --git a/ubitx_20/ubitx_20.ino b/ubitx_20/ubitx_20.ino
index d002b5f..a2bcae1 100644
--- a/ubitx_20/ubitx_20.ino
+++ b/ubitx_20/ubitx_20.ino
@@ -1465,8 +1465,15 @@ void checkAutoSaveFreqMode()
 
 void loop(){ 
   if (isCWAutoMode == 0){  //when CW AutoKey Mode, disable this process
+#ifdef USE_ALTKEYER
+    // when using the alternate keyer, don't check the PTT if we're in CW mode, because 
+    // the PTT is also a straight key
+    if (!txCAT && (cwMode == 0))
+      checkPTT();
+#else
     if (!txCAT)
       checkPTT();
+#endif
     checkButton();
   }
  else