diff --git a/tcl/board/ti_am437x_idk.cfg b/tcl/board/ti_am437x_idk.cfg
index 7676bf083..ce9c9a737 100644
--- a/tcl/board/ti_am437x_idk.cfg
+++ b/tcl/board/ti_am437x_idk.cfg
@@ -4,7 +4,7 @@
 source [find interface/ftdi/xds100v2.cfg]
 
 transport select jtag
-adapter_khz 16000
+adapter_khz 1000
 
 source [find target/am437x.cfg]
 $_TARGETNAME configure -event reset-init { init_platform 0x61a11b32 }