diff --git a/OpenCL/m13200.cl b/OpenCL/m13200.cl
index 914116927..4f29c8873 100644
--- a/OpenCL/m13200.cl
+++ b/OpenCL/m13200.cl
@@ -698,7 +698,7 @@ __constant u32 rcon[] =
   0x1b000000, 0x36000000,
 };
 
-void AES128_ExpandKey (u32 *userkey, u32 *rek, __local u32 *s_te0, __local u32 *s_te1, __local u32 *s_te2, __local u32 *s_te3, __local u32 *s_te4)
+static void AES128_ExpandKey (u32 *userkey, u32 *rek, __local u32 *s_te0, __local u32 *s_te1, __local u32 *s_te2, __local u32 *s_te3, __local u32 *s_te4)
 {
   rek[0] = userkey[0];
   rek[1] = userkey[1];
@@ -727,7 +727,7 @@ void AES128_ExpandKey (u32 *userkey, u32 *rek, __local u32 *s_te0, __local u32 *
   }
 }
 
-void AES128_InvertKey (u32 *rdk, __local u32 *s_td0, __local u32 *s_td1, __local u32 *s_td2, __local u32 *s_td3, __local u32 *s_td4, __local u32 *s_te0, __local u32 *s_te1, __local u32 *s_te2, __local u32 *s_te3, __local u32 *s_te4)
+static void AES128_InvertKey (u32 *rdk, __local u32 *s_td0, __local u32 *s_td1, __local u32 *s_td2, __local u32 *s_td3, __local u32 *s_td4, __local u32 *s_te0, __local u32 *s_te1, __local u32 *s_te2, __local u32 *s_te3, __local u32 *s_te4)
 {
   for (u32 i = 0, j = 40; i < j; i += 4, j -= 4)
   {
@@ -767,7 +767,7 @@ void AES128_InvertKey (u32 *rdk, __local u32 *s_td0, __local u32 *s_td1, __local
   }
 }
 
-void AES128_decrypt (const u32 *in, u32 *out, const u32 *rdk, __local u32 *s_td0, __local u32 *s_td1, __local u32 *s_td2, __local u32 *s_td3, __local u32 *s_td4)
+static void AES128_decrypt (const u32 *in, u32 *out, const u32 *rdk, __local u32 *s_td0, __local u32 *s_td1, __local u32 *s_td2, __local u32 *s_td3, __local u32 *s_td4)
 {
   u32 s0 = in[0] ^ rdk[0];
   u32 s1 = in[1] ^ rdk[1];
@@ -841,7 +841,7 @@ void AES128_decrypt (const u32 *in, u32 *out, const u32 *rdk, __local u32 *s_td0
          ^ rdk[43];
 }
 
-void sha1_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32 w3[4], u32 digest[5])
+static void sha1_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32 w3[4], u32 digest[5])
 {
   u32 A = digest[0];
   u32 B = digest[1];