diff --git a/make/ytools.mk.in b/make/ytools.mk.in
index 274cae5c..7f0a5afd 100644
--- a/make/ytools.mk.in
+++ b/make/ytools.mk.in
@@ -51,3 +51,6 @@ endif
 LDFLAGS += -lytools -ldl -pthread
 
 LD_LIB_PATH=$(TOPDIR)/lib
+
+PROJECT_LDFLAGS  += $(shell pkg-config --libs gtk+-2.0)
+