diff --git a/OpenCL/m06231.cl b/OpenCL/m06231.cl
index e409e3340..25c526c5b 100644
--- a/OpenCL/m06231.cl
+++ b/OpenCL/m06231.cl
@@ -23,8 +23,6 @@
 
 #define R 10
 
-#define BOX(S,n,i) (u32) ((S)[(n)][(i)])
-
 __constant u32 Ch[8][256] =
 {
   {
diff --git a/OpenCL/m06232.cl b/OpenCL/m06232.cl
index ac96de699..ff38e4b75 100644
--- a/OpenCL/m06232.cl
+++ b/OpenCL/m06232.cl
@@ -23,8 +23,6 @@
 
 #define R 10
 
-#define BOX(S,n,i) (u32) ((S)[(n)][(i)])
-
 __constant u32 Ch[8][256] =
 {
   {
diff --git a/OpenCL/m06233.cl b/OpenCL/m06233.cl
index a79446af2..74d579131 100644
--- a/OpenCL/m06233.cl
+++ b/OpenCL/m06233.cl
@@ -23,8 +23,6 @@
 
 #define R 10
 
-#define BOX(S,n,i) (u32) ((S)[(n)][(i)])
-
 __constant u32 Ch[8][256] =
 {
   {