diff --git a/code/BlenderModifier.cpp b/code/BlenderModifier.cpp
index 4af3749e6..e2bea4d85 100644
--- a/code/BlenderModifier.cpp
+++ b/code/BlenderModifier.cpp
@@ -48,6 +48,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "SceneCombiner.h"
 #include "Subdivision.h"
 
+#include <functional>
+
 using namespace Assimp;
 using namespace Assimp::Blender;