diff --git a/vcg/complex/intersection.h b/vcg/complex/intersection.h
index 8cb2877c..cfb21ed0 100644
--- a/vcg/complex/intersection.h
+++ b/vcg/complex/intersection.h
@@ -58,6 +58,7 @@ added vcg header
 #include<vcg/space/segment3.h>
 #include<vcg/space/intersection3.h>
 #include<vcg/complex/edgemesh/allocate.h>
+#include<vcg/complex/trimesh/allocate.h>
 #include<vcg/complex/trimesh/subset.h>
 #include<vcg/complex/trimesh/closest.h>
 #include<vcg/complex/trimesh/base.h>