diff -uNr iax-0.2.2.ORIG/src/md5.c iax-0.2.2/src/md5.c
--- iax-0.2.2.ORIG/src/md5.c	2014-05-13 13:26:51.570877706 +0100
+++ iax-0.2.2/src/md5.c	2014-05-13 13:27:08.567878553 +0100
@@ -165,7 +165,7 @@
     MD5Transform(ctx->buf, (uint32 *) ctx->in);
     byteReverse((unsigned char *) ctx->buf, 4);
     memcpy(digest, ctx->buf, 16);
-    memset(ctx, 0, sizeof(ctx));	/* In case it's sensitive */
+    memset(ctx, 0, sizeof(*ctx));	/* In case it's sensitive */
 }
 
 #ifndef ASM_MD5
