diff --git a/examples/build_system/make/make.mk b/examples/build_system/make/make.mk
index f70748d34..4f5d3242e 100644
--- a/examples/build_system/make/make.mk
+++ b/examples/build_system/make/make.mk
@@ -134,8 +134,8 @@ endif
 ifeq ($(LOGGER),rtt)
   CFLAGS += -DLOGGER_RTT
   #CFLAGS += -DSEGGER_RTT_MODE_DEFAULT=SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL
-  INC   += $(TOP)/$(lib/SEGGER_RTT)/RTT
-  SRC_C += $(lib/SEGGER_RTT)/RTT/SEGGER_RTT.c
+  INC   += $(TOP)/lib/SEGGER_RTT/RTT
+  SRC_C += lib/SEGGER_RTT/RTT/SEGGER_RTT.c
 endif
 ifeq ($(LOGGER),swo)
   CFLAGS += -DLOGGER_SWO