diff --git a/Makefile.base.mk b/Makefile.base.mk
index 8f6ec0ce..efec11d3 100644
--- a/Makefile.base.mk
+++ b/Makefile.base.mk
@@ -438,6 +438,17 @@ else ifeq ($(HAVE_OPENGL),true)
 HAVE_DGL = $(HAVE_X11)
 endif
 
+# ---------------------------------------------------------------------------------------------------------------------
+# Namespace flags
+
+ifneq ($(DISTRHO_NAMESPACE),)
+BUILD_CXX_FLAGS += -DDISTRHO_NAMESPACE=$(DISTRHO_NAMESPACE)
+endif
+
+ifneq ($(DGL_NAMESPACE),)
+BUILD_CXX_FLAGS += -DDGL_NAMESPACE=$(DGL_NAMESPACE)
+endif
+
 # ---------------------------------------------------------------------------------------------------------------------
 # Optional flags
 
@@ -473,7 +484,6 @@ ifeq ($(USE_RGBA),true)
 BUILD_CXX_FLAGS += -DDGL_USE_RGBA
 endif
 
-
 # ---------------------------------------------------------------------------------------------------------------------
 # Set app extension