diff --git a/src/qtviewer/ParseIfcFile.cpp b/src/qtviewer/ParseIfcFile.cpp
index e541b5d155..b2df481af0 100644
--- a/src/qtviewer/ParseIfcFile.cpp
+++ b/src/qtviewer/ParseIfcFile.cpp
@@ -1,5 +1,9 @@
 #include "ParseIfcFile.h"
 
+#include "../ifcparse/Ifc2x3.h"
+#define IfcSchema Ifc2x3
+
+#include "../ifcgeom/IfcGeom.h"
 #include "../ifcgeom_schema_agnostic/IfcGeomIterator.h"
 
 ParseIfcFile::ParseIfcFile() {}
@@ -39,4 +43,4 @@ void ParseIfcFile::Parse(const std::string& filePath)
             outputMsg("    " + mat.original_name());
         }
     } while (it->next());
-}
+}
\ No newline at end of file