diff --git a/gmshpy/gmshSolver.i b/gmshpy/gmshSolver.i
index f8fe04487dcbca626f5cd6ee42ed97ee3a8274e1..8777c91886d6ed509fc7019088fe923c92c969cb 100644
--- a/gmshpy/gmshSolver.i
+++ b/gmshpy/gmshSolver.i
@@ -3,6 +3,7 @@
 %include std_string.i
 %include std_vector.i
 %import "gmshCommon.i"
+%import "gmshNumeric.i"
 
 %{
   #include "GmshConfig.h"