diff --git a/trunk/src/common/crypto.c b/trunk/src/common/crypto.c
index 818c1e09b3..c0e7c6657f 100644
--- a/trunk/src/common/crypto.c
+++ b/trunk/src/common/crypto.c
@@ -63,7 +63,7 @@ crypto_cipher_key_length(int type) {
     }
 }
 
-static inline EVP_CIPHER *
+static inline const EVP_CIPHER *
 crypto_cipher_evp_cipher(int type, int enc) {
   switch(type) 
     {