diff --git a/hw/application_fpga/Makefile b/hw/application_fpga/Makefile
index 7a1db80..a30a430 100644
--- a/hw/application_fpga/Makefile
+++ b/hw/application_fpga/Makefile
@@ -26,7 +26,7 @@ ICESTORM_PATH ?=
 # bits wide; an EBR is 128 32-bits words)
 BRAM_FW_SIZE ?= 1536
 
-PIN_FILE ?= application_fpga_mta1_usb_v1.pcf
+PIN_FILE ?= application_fpga_tk1.pcf
 
 SIZE ?= llvm-size
 OBJCOPY ?= llvm-objcopy
diff --git a/hw/application_fpga/data/application_fpga_mta1_usb_v1.pcf b/hw/application_fpga/data/application_fpga_tk1.pcf
similarity index 81%
rename from hw/application_fpga/data/application_fpga_mta1_usb_v1.pcf
rename to hw/application_fpga/data/application_fpga_tk1.pcf
index f955249..c22b7fa 100644
--- a/hw/application_fpga/data/application_fpga_mta1_usb_v1.pcf
+++ b/hw/application_fpga/data/application_fpga_tk1.pcf
@@ -1,9 +1,9 @@
 #=======================================================================
 #
-# application_fpga_usb_v1.pcf
-# ---------------------------
+# application_fpga_tk1.pcf
+# ------------------------
 # Pin constraints file for the Application FPGA design to be used
-# on the MTA1-USB-V1 board with the CH552 MCU used as a USB-serial chip.
+# on the tk1 board with the CH552 MCU used as a USB-serial chip.
 #
 #
 # Copyright (C) 2022 - Tillitis AB
@@ -35,5 +35,5 @@ set_io led_g 40
 set_io led_b 41
 
 #=======================================================================
-# EOF application_fpga_ch552.pcf
+# EOF application_fpga_tk1.pcf
 #=======================================================================