diff --git a/Makefile.am b/Makefile.am
index 94b1c143..45df7fea 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -72,7 +72,7 @@ install-libweston_moduleLTLIBRARIES install-moduleLTLIBRARIES: install-libLTLIBR
 lib_LTLIBRARIES = libweston-@LIBWESTON_MAJOR@.la
 libweston_@LIBWESTON_MAJOR@_la_CPPFLAGS = $(AM_CPPFLAGS) -DIN_WESTON
 libweston_@LIBWESTON_MAJOR@_la_CFLAGS = $(AM_CFLAGS) \
-	$(COMPOSITOR_CFLAGS) $(LIBUNWIND_CFLAGS) $(LIBDRM_CFLAGS)
+	$(COMPOSITOR_CFLAGS) $(EGL_CFLAGS) $(LIBUNWIND_CFLAGS) $(LIBDRM_CFLAGS)
 libweston_@LIBWESTON_MAJOR@_la_LIBADD = $(COMPOSITOR_LIBS) $(LIBUNWIND_LIBS) \
 	$(DLOPEN_LIBS) -lm $(CLOCK_GETTIME_LIBS) \
 	$(LIBINPUT_BACKEND_LIBS) libshared.la