diff --git a/src/exchange/taler-exchange-httpd_purses_create.c b/src/exchange/taler-exchange-httpd_purses_create.c
index 434984d85..112a24dc5 100644
--- a/src/exchange/taler-exchange-httpd_purses_create.c
+++ b/src/exchange/taler-exchange-httpd_purses_create.c
@@ -419,7 +419,7 @@ create_transaction (void *cls,
                                       &h_econtract),
           GNUNET_JSON_pack_data_auto ("econtract_sig",
                                       &econtract.econtract_sig),
-          GNUNET_JSON_pack_data_auto ("pub_ckey",
+          GNUNET_JSON_pack_data_auto ("contract_pub",
                                       &econtract.contract_pub));
     GNUNET_free (econtract.econtract);
     return GNUNET_DB_STATUS_HARD_ERROR;
diff --git a/src/exchange/taler-exchange-httpd_reserves_purse.c b/src/exchange/taler-exchange-httpd_reserves_purse.c
index 74291976d..7aa00a500 100644
--- a/src/exchange/taler-exchange-httpd_reserves_purse.c
+++ b/src/exchange/taler-exchange-httpd_reserves_purse.c
@@ -461,7 +461,7 @@ purse_transaction (void *cls,
                                         &h_econtract),
             GNUNET_JSON_pack_data_auto ("econtract_sig",
                                         &econtract.econtract_sig),
-            GNUNET_JSON_pack_data_auto ("pub_ckey",
+            GNUNET_JSON_pack_data_auto ("contract_pub",
                                         &econtract.contract_pub));
       GNUNET_free (econtract.econtract);
       return GNUNET_DB_STATUS_HARD_ERROR;
diff --git a/src/lib/exchange_api_purse_create_with_merge.c b/src/lib/exchange_api_purse_create_with_merge.c
index 90301b869..e726b712f 100644
--- a/src/lib/exchange_api_purse_create_with_merge.c
+++ b/src/lib/exchange_api_purse_create_with_merge.c
@@ -354,7 +354,7 @@ handle_purse_create_with_merge_finished (void *cls,
       break;
     case TALER_EC_EXCHANGE_PURSE_ECONTRACT_CONFLICTING_META_DATA:
       {
-        struct TALER_ContractDiffiePublicP pub_ckey;
+        struct TALER_ContractDiffiePublicP contract_pub;
         struct TALER_PurseContractSignatureP contract_sig;
         struct GNUNET_HashCode h_econtract;
         struct GNUNET_JSON_Specification spec[] = {
@@ -362,8 +362,8 @@ handle_purse_create_with_merge_finished (void *cls,
                                        &h_econtract),
           GNUNET_JSON_spec_fixed_auto ("econtract_sig",
                                        &contract_sig),
-          GNUNET_JSON_spec_fixed_auto ("pub_ckey",
-                                       &pub_ckey),
+          GNUNET_JSON_spec_fixed_auto ("contract_pub",
+                                       &contract_pub),
           GNUNET_JSON_spec_end ()
         };
 
@@ -380,7 +380,7 @@ handle_purse_create_with_merge_finished (void *cls,
         if (GNUNET_OK !=
             TALER_wallet_econtract_upload_verify2 (
               &h_econtract,
-              &pub_ckey,
+              &contract_pub,
               &pcm->purse_pub,
               &contract_sig))
         {