diff --git a/src/XMPPThread/PresenceSub.c b/src/XMPPThread/PresenceSub.c
index 453df40..3f55bce 100644
--- a/src/XMPPThread/PresenceSub.c
+++ b/src/XMPPThread/PresenceSub.c
@@ -10,7 +10,7 @@
 #include <string.h>
 
 static char *
-SubscriptionHash(ParseeData *data, char *from, char *to)
+SubscriptionHash(char *from, char *to)
 {
     uint8_t *sum;
     char *hash;
@@ -22,7 +22,7 @@ SubscriptionHash(ParseeData *data, char *from, char *to)
     memcpy(&sum[0], from, strlen(from));
     memcpy(&sum[strlen(from) + 1], to, strlen(to));
 
-    hash = Base64Encode(sum, len);
+    hash = Base64Encode((const char *) sum, len);
     Free(sum);
 
     return hash;
@@ -54,7 +54,7 @@ AddPresenceSubscriber(ParseeData *data, char *from, char *to)
     }
 
     database = data->db;
-    hash = SubscriptionHash(data, from, to);
+    hash = SubscriptionHash(from, to);
     ref = DbCreate(database, 2, "subs", hash);
     if (!ref)
     {
@@ -82,7 +82,7 @@ IsSubscribed(ParseeData *data, char *user, char *to)
     }
 
     database = data->db;
-    hash = SubscriptionHash(data, user, to);
+    hash = SubscriptionHash(user, to);
     ret = DbExists(database, 2, "subs", hash);
     Free(hash);