diff --git a/converter/ps2_usb/Makefile.mbed b/converter/ps2_usb/Makefile.mbed
index eeb5ad9d..a7ea5bcf 100644
--- a/converter/ps2_usb/Makefile.mbed
+++ b/converter/ps2_usb/Makefile.mbed
@@ -1,7 +1,7 @@
 PROJECT = ps2_usb
 
 TMK_DIR = ../../tmk_core
-MBED_DIR = $(TMK_DIR)/mbed-sdk
+MBED_DIR = $(TMK_DIR)/tool/mbed/mbed-sdk
 
 #VPATH += $(MBED_DIR):$(TMK_DIR)
 vpath %.s .:$(MBED_DIR):$(TMK_DIR)