diff --git a/Makefile.plugins.mk b/Makefile.plugins.mk
index 5e3b9986..41b05ce9 100644
--- a/Makefile.plugins.mk
+++ b/Makefile.plugins.mk
@@ -71,6 +71,7 @@ vst        = $(TARGET_DIR)/$(NAME)-vst$(LIB_EXT)
 # Handle UI stuff, disable UI support automatically
 
 ifeq ($(FILES_UI),)
+HAVE_DGL = false
 UI_TYPE = none
 endif