diff --git a/Makefile.mk b/Makefile.mk
index 1ff8290..df71125 100644
--- a/Makefile.mk
+++ b/Makefile.mk
@@ -60,11 +60,13 @@ BASE_FLAGS += -DHAVE_PROJECTM
 endif
 
 ifeq ($(HAVE_ZYN_DEPS),true)
+ifneq ($(DEBUG),true)
 BASE_FLAGS += -DHAVE_ZYN_DEPS
 ifeq ($(HAVE_ZYN_UI_DEPS),true)
 BASE_FLAGS += -DHAVE_ZYN_UI_DEPS
 endif
 endif
+endif
 
 # ---------------------------------------------------------------------------------------------------------------------