diff --git a/src/avrdude.conf.in b/src/avrdude.conf.in
index 617f1dc4..906e6706 100644
--- a/src/avrdude.conf.in
+++ b/src/avrdude.conf.in
@@ -1723,7 +1723,7 @@ programmer # stk600
     id                     = "stk600";
     desc                   = "Atmel STK600";
     type                   = "stk600";
-    prog_modes             = PM_TPI | PM_ISP | PM_PDI;
+    prog_modes             = PM_ISP | PM_PDI;
     extra_features         = HAS_VTARG_ADJ | HAS_VTARG_READ | HAS_FOSC_ADJ | HAS_VAREF_ADJ | HAS_BITCLOCK_ADJ;
     connection_type        = usb;
     usbvid                 = 0x03eb;