diff --git a/programs/util/pem2der.c b/programs/util/pem2der.c
index 670daea..2c0e585 100644
--- a/programs/util/pem2der.c
+++ b/programs/util/pem2der.c
@@ -136,7 +136,7 @@
     *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( -1 );