diff --git a/pbuf.mk b/pbuf.mk
index 224077c..08f714c 100644
--- a/pbuf.mk
+++ b/pbuf.mk
@@ -1,4 +1,4 @@
 PBUF_PATH := $(dir $(abspath $(lastword $(MAKEFILE_LIST)))).
 
-CSRCS += $(PBUF_PATH)/src/pbuf.c
+CSRCS += $(PBUF_PATH)/src/tlpbuf.c
 INCDIRS += $(PBUF_PATH)/inc