diff --git a/library/pkparse.c b/library/pkparse.c
index 6ab16e5..acca2af 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -943,7 +943,7 @@
     md_type_t md_alg;
 #endif
 
-    p = (unsigned char *) key;
+    p = key;
     end = p + keylen;
 
     if( pwdlen == 0 )