diff --git a/src/ifcgeom/taxonomy.h b/src/ifcgeom/taxonomy.h
index 8ce654980b..4b4e9816bb 100644
--- a/src/ifcgeom/taxonomy.h
+++ b/src/ifcgeom/taxonomy.h
@@ -11,7 +11,6 @@
 #include <string>
 #include <tuple>
 #include <exception>
-#include <cstdalign>
 
 namespace ifcopenshell {