diff --git a/OpenCL/m14100_a1.cl b/OpenCL/m14100_a1.cl
index cdac30d63..6e0cdb160 100644
--- a/OpenCL/m14100_a1.cl
+++ b/OpenCL/m14100_a1.cl
@@ -372,7 +372,7 @@ __constant u32 c_skb[8][64] =
 #define BOX1(i,S) (u32x) ((S)[(i).s0], (S)[(i).s1], (S)[(i).s2], (S)[(i).s3], (S)[(i).s4], (S)[(i).s5], (S)[(i).s6], (S)[(i).s7], (S)[(i).s8], (S)[(i).s9], (S)[(i).sa], (S)[(i).sb], (S)[(i).sc], (S)[(i).sd], (S)[(i).se], (S)[(i).sf])
 #endif
 
-void _des_crypt_encrypt (u32x iv[2], u32x data[2], u32x Kc[16], u32x Kd[16], __local u32 (*s_SPtrans)[64])
+static void _des_crypt_encrypt (u32x iv[2], u32x data[2], u32x Kc[16], u32x Kd[16], __local u32 (*s_SPtrans)[64])
 {
   u32x r = rotl32 (data[0], 3u);
   u32x l = rotl32 (data[1], 3u);
@@ -416,7 +416,7 @@ void _des_crypt_encrypt (u32x iv[2], u32x data[2], u32x Kc[16], u32x Kd[16], __l
   iv[1] = rotl32 (r, 29u);
 }
 
-void _des_crypt_decrypt (u32x iv[2], u32x data[2], u32x Kc[16], u32x Kd[16], __local u32 (*s_SPtrans)[64])
+static void _des_crypt_decrypt (u32x iv[2], u32x data[2], u32x Kc[16], u32x Kd[16], __local u32 (*s_SPtrans)[64])
 {
   u32x r = rotl32 (data[0], 3u);
   u32x l = rotl32 (data[1], 3u);
@@ -460,7 +460,7 @@ void _des_crypt_decrypt (u32x iv[2], u32x data[2], u32x Kc[16], u32x Kd[16], __l
   iv[1] = rotl32 (r, 29u);
 }
 
-void _des_crypt_keysetup (u32x c, u32x d, u32x Kc[16], u32x Kd[16], __local u32 (*s_skb)[64])
+static void _des_crypt_keysetup (u32x c, u32x d, u32x Kc[16], u32x Kd[16], __local u32 (*s_skb)[64])
 {
   u32x tt;