diff --git a/panda/src/mathutil/triangulator3.cxx b/panda/src/mathutil/triangulator3.cxx
index 0ac0367d52..77747c673c 100755
--- a/panda/src/mathutil/triangulator3.cxx
+++ b/panda/src/mathutil/triangulator3.cxx
@@ -13,7 +13,7 @@
 ////////////////////////////////////////////////////////////////////
 
 #include "triangulator3.h"
-#include "look_at_src.h"
+#include "look_at.h"
 
 ////////////////////////////////////////////////////////////////////
 //     Function: Triangulator3::Constructor