diff --git a/src/SMESH_I/SMESH_Gen_i.cxx b/src/SMESH_I/SMESH_Gen_i.cxx
index f5de7bd50..271523e49 100644
--- a/src/SMESH_I/SMESH_Gen_i.cxx
+++ b/src/SMESH_I/SMESH_Gen_i.cxx
@@ -54,6 +54,7 @@
 
 #ifdef WNT
  #include <windows.h>
+ #include <process.h>
 #else
  #include <dlfcn.h>
 #endif