diff --git a/modules/mol/base/pymod/export_coord_frame.cc b/modules/mol/base/pymod/export_coord_frame.cc
index a63486e2a5aa4dd29487c787e609e7e430f4a5b5..16665e0bb1ea3759f7cbcc62da1e2a4931df6aa4 100644
--- a/modules/mol/base/pymod/export_coord_frame.cc
+++ b/modules/mol/base/pymod/export_coord_frame.cc
@@ -20,7 +20,7 @@
 using namespace boost::python;
 
 #include <ost/mol/coord_frame.hh>
-#include <ost/geom/Vec3.hh>
+#include <ost/geom/vec3.hh>
 #include <ost/mol/entity_handle.hh>
 
 using namespace ost;