Index: kernel/include/IMP/Optimizer.h
===================================================================
--- kernel/include/IMP/Optimizer.h	(revision 611)
+++ kernel/include/IMP/Optimizer.h	(working copy)
@@ -8,8 +8,6 @@
 #ifndef __IMP_OPTIMIZER_H
 #define __IMP_OPTIMIZER_H
 
-#include <limits>
-
 #include "IMP_config.h"
 #include "base_types.h"
 #include "VersionInfo.h"
@@ -19,6 +17,8 @@
 #include "Particle.h"
 #include "internal/ObjectPointer.h"
 
+#include <limits>
+
 namespace IMP
 {