diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index c451f0cc45..60294c2256 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -221,7 +221,7 @@ endif()
 
 if(GLTF_SUPPORT OR CITYJSON_SUPPORT)
     UNIFY_ENVVARS_AND_CACHE(JSON_INCLUDE_DIR)
-    find_path(json_header_path "nlohmann/json.hpp" ${JSON_INCLUDE_DIR})
+    find_path(json_header_path "json.hpp" ${JSON_INCLUDE_DIR} PATH_SUFFIXES "nlohmann")
     set(JSON_INCLUDE_DIR ${json_header_path})
 
     if(json_header_path)
diff --git a/src/examples/IfcAdvancedHouse.cpp b/src/examples/IfcAdvancedHouse.cpp
index f4623fa7cc..cb1f64975f 100644
--- a/src/examples/IfcAdvancedHouse.cpp
+++ b/src/examples/IfcAdvancedHouse.cpp
@@ -38,7 +38,7 @@
 
 #include <Standard_Version.hxx>
 
-#define IfcSchema Ifc4
+#define IfcSchema Ifc2x3
 #include "../ifcparse/macros.h"
 #include "../ifcparse/Ifc2x3.h"
 #include "../ifcparse/IfcBaseClass.h"
diff --git a/src/examples/IfcOpenHouse.cpp b/src/examples/IfcOpenHouse.cpp
index f7e4a85873..3f6d56236d 100644
--- a/src/examples/IfcOpenHouse.cpp
+++ b/src/examples/IfcOpenHouse.cpp
@@ -35,7 +35,7 @@
 
 #include <Precision.hxx>
 
-#define IfcSchema Ifc4
+#define IfcSchema Ifc2x3
 #include "../ifcparse/macros.h"
 #include "../ifcparse/Ifc2x3.h"
 #include "../ifcparse/IfcBaseClass.h"