diff --git a/mps/code/clock.h b/mps/code/clock.h
index 253f7a5e0e4..d5fd7bc0e4e 100644
--- a/mps/code/clock.h
+++ b/mps/code/clock.h
@@ -7,7 +7,6 @@
 #ifndef clock_h
 #define clock_h
 
-#include <limits.h>
 #include "mpmtypes.h" /* for Word */
 
 
diff --git a/mps/code/misc.h b/mps/code/misc.h
index fed416157dd..7380421d5c5 100644
--- a/mps/code/misc.h
+++ b/mps/code/misc.h
@@ -13,8 +13,6 @@
 #ifndef misc_h
 #define misc_h
 
-#include <stddef.h>
-
 
 typedef int Bool;                       /* <design/type/#bool> */
 enum BoolEnum {