diff --git a/library/cipher_wrap.c b/library/cipher_wrap.c
index 736c292..c958cf6 100644
--- a/library/cipher_wrap.c
+++ b/library/cipher_wrap.c
@@ -182,7 +182,7 @@
 
 static void * aes_ctx_alloc( void )
 {
-    aes_context *aes = (aes_context *) polarssl_malloc( sizeof( aes_context ) );
+    aes_context *aes = polarssl_malloc( sizeof( aes_context ) );
 
     if( aes == NULL )
         return( NULL );
@@ -544,7 +544,7 @@
 static void * camellia_ctx_alloc( void )
 {
     camellia_context *ctx;
-    ctx = (camellia_context *) polarssl_malloc( sizeof( camellia_context ) );
+    ctx = polarssl_malloc( sizeof( camellia_context ) );
 
     if( ctx == NULL )
         return( NULL );
@@ -925,7 +925,7 @@
 
 static void * des_ctx_alloc( void )
 {
-    des_context *des = (des_context *) polarssl_malloc( sizeof( des_context ) );
+    des_context *des = polarssl_malloc( sizeof( des_context ) );
 
     if( des == NULL )
         return( NULL );
@@ -944,7 +944,7 @@
 static void * des3_ctx_alloc( void )
 {
     des3_context *des3;
-    des3 = (des3_context *) polarssl_malloc( sizeof( des3_context ) );
+    des3 = polarssl_malloc( sizeof( des3_context ) );
 
     if( des3 == NULL )
         return( NULL );
@@ -1148,7 +1148,7 @@
 static void * blowfish_ctx_alloc( void )
 {
     blowfish_context *ctx;
-    ctx = (blowfish_context *) polarssl_malloc( sizeof( blowfish_context ) );
+    ctx = polarssl_malloc( sizeof( blowfish_context ) );
 
     if( ctx == NULL )
         return( NULL );
@@ -1250,7 +1250,7 @@
 static void * arc4_ctx_alloc( void )
 {
     arc4_context *ctx;
-    ctx = (arc4_context *) polarssl_malloc( sizeof( arc4_context ) );
+    ctx = polarssl_malloc( sizeof( arc4_context ) );
 
     if( ctx == NULL )
         return( NULL );