diff --git a/OpenCL/m08600_a0-optimized.cl b/OpenCL/m08600_a0-optimized.cl
index 8e5b7e9a2..d64bcc9ba 100644
--- a/OpenCL/m08600_a0-optimized.cl
+++ b/OpenCL/m08600_a0-optimized.cl
@@ -86,7 +86,7 @@ void lotus_mix (u32x *in, __local u32 *s_lotus_magic_table)
   }
 }
 
-void lotus_transform_password (u32x in[4], u32x out[4], __local u32 *s_lotus_magic_table)
+void lotus_transform_password (const u32x in[4], u32x out[4], __local u32 *s_lotus_magic_table)
 {
   u32x t = out[3] >> 24;
 
@@ -183,7 +183,7 @@ void pad (u32 w[4], const u32 len)
   }
 }
 
-void mdtransform_norecalc (u32x state[4], u32x block[4], __local u32 *s_lotus_magic_table)
+void mdtransform_norecalc (u32x state[4], const u32x block[4], __local u32 *s_lotus_magic_table)
 {
   u32x x[12];
 
@@ -208,7 +208,7 @@ void mdtransform_norecalc (u32x state[4], u32x block[4], __local u32 *s_lotus_ma
   state[3] = x[3];
 }
 
-void mdtransform (u32x state[4], u32x checksum[4], u32x block[4], __local u32 *s_lotus_magic_table)
+void mdtransform (u32x state[4], u32x checksum[4], const u32x block[4], __local u32 *s_lotus_magic_table)
 {
   mdtransform_norecalc (state, block, s_lotus_magic_table);
 
diff --git a/OpenCL/m08600_a1-optimized.cl b/OpenCL/m08600_a1-optimized.cl
index e8b143ca2..28aaa4c45 100644
--- a/OpenCL/m08600_a1-optimized.cl
+++ b/OpenCL/m08600_a1-optimized.cl
@@ -84,7 +84,7 @@ void lotus_mix (u32x *in, __local u32 *s_lotus_magic_table)
   }
 }
 
-void lotus_transform_password (u32x in[4], u32x out[4], __local u32 *s_lotus_magic_table)
+void lotus_transform_password (const u32x in[4], u32x out[4], __local u32 *s_lotus_magic_table)
 {
   u32x t = out[3] >> 24;
 
@@ -181,7 +181,7 @@ void pad (u32 w[4], const u32 len)
   }
 }
 
-void mdtransform_norecalc (u32x state[4], u32x block[4], __local u32 *s_lotus_magic_table)
+void mdtransform_norecalc (u32x state[4], const u32x block[4], __local u32 *s_lotus_magic_table)
 {
   u32x x[12];
 
@@ -206,7 +206,7 @@ void mdtransform_norecalc (u32x state[4], u32x block[4], __local u32 *s_lotus_ma
   state[3] = x[3];
 }
 
-void mdtransform (u32x state[4], u32x checksum[4], u32x block[4], __local u32 *s_lotus_magic_table)
+void mdtransform (u32x state[4], u32x checksum[4], const u32x block[4], __local u32 *s_lotus_magic_table)
 {
   mdtransform_norecalc (state, block, s_lotus_magic_table);
 
diff --git a/OpenCL/m08600_a3-optimized.cl b/OpenCL/m08600_a3-optimized.cl
index f2ddc9df5..1d85b39d7 100644
--- a/OpenCL/m08600_a3-optimized.cl
+++ b/OpenCL/m08600_a3-optimized.cl
@@ -83,7 +83,7 @@ void lotus_mix (u32x *in, __local u32 *s_lotus_magic_table)
   }
 }
 
-void lotus_transform_password (u32x in[4], u32x out[4], __local u32 *s_lotus_magic_table)
+void lotus_transform_password (const u32x in[4], u32x out[4], __local u32 *s_lotus_magic_table)
 {
   u32x t = out[3] >> 24;
 
@@ -180,7 +180,7 @@ void pad (u32 w[4], const u32 len)
   }
 }
 
-void mdtransform_norecalc (u32x state[4], u32x block[4], __local u32 *s_lotus_magic_table)
+void mdtransform_norecalc (u32x state[4], const u32x block[4], __local u32 *s_lotus_magic_table)
 {
   u32x x[12];
 
@@ -205,7 +205,7 @@ void mdtransform_norecalc (u32x state[4], u32x block[4], __local u32 *s_lotus_ma
   state[3] = x[3];
 }
 
-void mdtransform (u32x state[4], u32x checksum[4], u32x block[4], __local u32 *s_lotus_magic_table)
+void mdtransform (u32x state[4], u32x checksum[4], const u32x block[4], __local u32 *s_lotus_magic_table)
 {
   mdtransform_norecalc (state, block, s_lotus_magic_table);