diff --git a/src/ifcgeom/IfcGeom.h b/src/ifcgeom/IfcGeom.h
index a02036a9b7..ccf7f0e8fe 100644
--- a/src/ifcgeom/IfcGeom.h
+++ b/src/ifcgeom/IfcGeom.h
@@ -490,7 +490,7 @@ public:
 					prs_styles.push_back(style_l);
 				}
 			}
-#if defined SCHEMA_HAS_IfcStyleAssignmentSelect or defined SCHEMA_HAS_IfcPresentationStyleAssignment
+#if defined(SCHEMA_HAS_IfcStyleAssignmentSelect) || defined(SCHEMA_HAS_IfcPresentationStyleAssignment)
 	   }
 #endif