--- a/Make.spec	Tue May 08 12:34:42 2018 +0200
+++ b/Make.spec	Tue May 08 12:47:31 2018 +0200
@@ -135,6 +135,7 @@
 	XftFontDescription \
 	XEmbedContainerView \
 	XWorkstation \
+	X11GraphicsContext \
 	GLXWorkstation \
 
 
@@ -226,6 +227,7 @@
     $(OUTDIR)XftFontDescription.$(O) \
     $(OUTDIR)XEmbedContainerView.$(O) \
     $(OUTDIR)XWorkstation.$(O) \
+    $(OUTDIR)X11GraphicsContext.$(O) \
     $(OUTDIR)GLXWorkstation.$(O) \