diff --git a/src/chatmodel.cpp b/src/chatmodel.cpp
index 1ac2acc..b033d7e 100644
--- a/src/chatmodel.cpp
+++ b/src/chatmodel.cpp
@@ -394,7 +394,7 @@ Tx MainWindow::createTxFromChatPage() {
 
                 /////////////////Alice Pubkey 
     #define MESSAGEAP ((const unsigned char *) cidchar)///////////static atm, in future we will use the CID here
-    #define MESSAGEAP_LEN 5
+    #define MESSAGEAP_LEN lengthcid
 
     unsigned char alice_publickey[crypto_box_PUBLICKEYBYTES];
 
diff --git a/src/controller.cpp b/src/controller.cpp
index 4069022..342a24a 100644
--- a/src/controller.cpp
+++ b/src/controller.cpp
@@ -956,7 +956,7 @@ void Controller::refreshTransactions() {
     
                 /////////////////Alice Pubkey bob create
     #define MESSAGEAP ((const unsigned char *) cidchar)///////////static atm, in future we will use the CID here
-    #define MESSAGEAP_LEN 5
+    #define MESSAGEAP_LEN lengthcid
 
     unsigned char alice_publickey[crypto_box_PUBLICKEYBYTES];