diff --git a/include/polarssl/cipher.h b/include/polarssl/cipher.h
index d890ff9..f6a310e 100644
--- a/include/polarssl/cipher.h
+++ b/include/polarssl/cipher.h
@@ -477,7 +477,7 @@
  *                      POLARSSL_KEY_LENGTH_NONE if ctx has not been
  *                      initialised.
  */
-static inline int cipher_get_key_size ( const cipher_context_t *ctx )
+static inline int cipher_get_key_size( const cipher_context_t *ctx )
 {
     if( NULL == ctx || NULL == ctx->cipher_info )
         return POLARSSL_KEY_LENGTH_NONE;