diff --git a/OpenCL/m01600.cl b/OpenCL/m01600.cl
index 9ca181063..31a40af9f 100644
--- a/OpenCL/m01600.cl
+++ b/OpenCL/m01600.cl
@@ -17,7 +17,7 @@
 #define md5apr1_magic0 0x72706124u
 #define md5apr1_magic1 0x00002431u
 
-void md5_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32 w3[4], u32 digest[4])
+static void md5_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32 w3[4], u32 digest[4])
 {
   u32 a = digest[0];
   u32 b = digest[1];
@@ -115,7 +115,7 @@ void md5_transform (const u32 w0[4], const u32 w1[4], const u32 w2[4], const u32
   digest[3] += d;
 }
 
-void memcat16 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
+static void memcat16 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
 {
   u32 tmp0;
   u32 tmp1;
@@ -227,7 +227,7 @@ void memcat16 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const
   }
 }
 
-void memcat16_x80 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
+static void memcat16_x80 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[4])
 {
   u32 tmp0;
   u32 tmp1;
@@ -339,7 +339,7 @@ void memcat16_x80 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], c
   }
 }
 
-void memcat8 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[2])
+static void memcat8 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append[2])
 {
   u32 tmp0;
   u32 tmp1;
@@ -431,7 +431,7 @@ void memcat8 (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const
   }
 }
 
-void append_sign (u32 block0[4], u32 block1[4], const u32 block_len)
+static void append_sign (u32 block0[4], u32 block1[4], const u32 block_len)
 {
   switch (block_len)
   {
@@ -529,7 +529,7 @@ void append_sign (u32 block0[4], u32 block1[4], const u32 block_len)
   }
 }
 
-void append_1st (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append)
+static void append_1st (u32 block0[4], u32 block1[4], u32 block2[4], u32 block3[4], const u32 block_len, const u32 append)
 {
   switch (block_len)
   {