diff --git a/distrho/DistrhoUI_macOS.mm b/distrho/DistrhoUI_macOS.mm
index 80b06182..f2b33593 100644
--- a/distrho/DistrhoUI_macOS.mm
+++ b/distrho/DistrhoUI_macOS.mm
@@ -16,6 +16,7 @@
 
 // A few utils declared in DistrhoUI.cpp but defined here because they use Obj-C
 
+#include "DistrhoDetails.hpp"
 #include "src/DistrhoPluginChecks.h"
 #include "src/DistrhoDefines.h"