diff --git a/include/property_mgr.h b/include/property_mgr.h
index 7975e9d85e..be564dd960 100644
--- a/include/property_mgr.h
+++ b/include/property_mgr.h
@@ -31,6 +31,9 @@
 #include <memory>
 #include <eda_units.h>
 
+// Needed for stl hash extensions
+#include <common.h>
+
 class PROPERTY_BASE;
 class TYPE_CAST_BASE;