diff --git a/libraries/Desktop/Desktop.mk b/libraries/Desktop/Desktop.mk
index 2eaa85309d..f388e73a9b 100644
--- a/libraries/Desktop/Desktop.mk
+++ b/libraries/Desktop/Desktop.mk
@@ -116,7 +116,7 @@ endif
 #
 # Tool options
 #
-DEFINES			=	$(EXTRAFLAGS)
+DEFINES			=	$(EXTRAFLAGS) -DSKETCH=\"$(SKETCH)\"
 OPTFLAGS		=	-g -Wformat -Wall -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Wformat=2 -Wno-reorder
 DEPFLAGS		=	-MD -MT $@