diff --git a/code/D3MFImporter.cpp b/code/D3MFImporter.cpp
index d8c062de4..399bfdd36 100644
--- a/code/D3MFImporter.cpp
+++ b/code/D3MFImporter.cpp
@@ -38,6 +38,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ----------------------------------------------------------------------
 */
 
+#ifndef ASSIMP_BUILD_NO_3MF_IMPORTER
+
 #include "D3MFImporter.h"
 
 #include <assimp/scene.h>
@@ -59,8 +61,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <assimp/ai_assert.h>
 
-#ifndef ASSIMP_BUILD_NO_3MF_IMPORTER
-
 #include "D3MFOpcPackage.h"
 #include <contrib/unzip/unzip.h>
 #include "irrXMLWrapper.h"
diff --git a/code/D3MFOpcPackage.cpp b/code/D3MFOpcPackage.cpp
index df83e70f5..f6c1fb605 100644
--- a/code/D3MFOpcPackage.cpp
+++ b/code/D3MFOpcPackage.cpp
@@ -38,6 +38,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ----------------------------------------------------------------------
 */
 
+#ifndef ASSIMP_BUILD_NO_3MF_IMPORTER
 
 #include "D3MFOpcPackage.h"
 #include "Exceptional.h"
@@ -54,8 +55,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <cassert>
 #include <cstdlib>
 
-#ifndef ASSIMP_BUILD_NO_3MF_IMPORTER
-
 #include <contrib/unzip/unzip.h>
 
 namespace Assimp {