diff --git a/library/pkparse.c b/library/pkparse.c
index 4ca359a..d8ee64a 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -89,7 +89,7 @@
     *n = (size_t) size;
 
     if( *n + 1 == 0 ||
-        ( *buf = (unsigned char *) polarssl_malloc( *n + 1 ) ) == NULL )
+        ( *buf = polarssl_malloc( *n + 1 ) ) == NULL )
     {
         fclose( f );
         return( POLARSSL_ERR_PK_MALLOC_FAILED );