diff --git a/lib/libmd/md5c.c b/lib/libmd/md5c.c
index 6b5046416ada..75b1e5eb1e8c 100644
--- a/lib/libmd/md5c.c
+++ b/lib/libmd/md5c.c
@@ -127,8 +127,7 @@ static unsigned char PADDING[64] = {
 /* MD5 initialization. Begins an MD5 operation, writing a new context. */
 
 void
-MD5Init (context)
-	MD5_CTX *context;
+MD5Init (MD5_CTX *context)
 {
 
 	context->count[0] = context->count[1] = 0;
@@ -147,10 +146,7 @@ MD5Init (context)
  */
 
 void
-MD5Update (context, in, inputLen)
-	MD5_CTX *context;
-	const void *in;
-	unsigned int inputLen;
+MD5Update (MD5_CTX *context, const void *in, unsigned int inputLen)
 {
 	unsigned int i, idx, partLen;
 	const unsigned char *input = in;
@@ -190,8 +186,7 @@ MD5Update (context, in, inputLen)
  */
 
 void
-MD5Pad (context)
-	MD5_CTX *context;
+MD5Pad (MD5_CTX *context)
 {
 	unsigned char bits[8];
 	unsigned int idx, padLen;
@@ -214,9 +209,7 @@ MD5Pad (context)
  */
 
 void
-MD5Final (digest, context)
-	unsigned char digest[16];
-	MD5_CTX *context;
+MD5Final (unsigned char digest[16], MD5_CTX *context)
 {
 	/* Do padding. */
 	MD5Pad (context);
@@ -231,9 +224,7 @@ MD5Final (digest, context)
 /* MD5 basic transformation. Transforms state based on block. */
 
 static void
-MD5Transform (state, block)
-	u_int32_t state[4];
-	const unsigned char block[64];
+MD5Transform (u_int32_t state[4], const unsigned char block[64])
 {
 	u_int32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];