diff --git a/packages/horizon/contracts/data-service/utilities/ProvisionManager.sol b/packages/horizon/contracts/data-service/utilities/ProvisionManager.sol
index d1cf94287..ea934c267 100644
--- a/packages/horizon/contracts/data-service/utilities/ProvisionManager.sol
+++ b/packages/horizon/contracts/data-service/utilities/ProvisionManager.sol
@@ -71,7 +71,7 @@ abstract contract ProvisionManager is Initializable, GraphDirectory, ProvisionMa
      * @param caller The address of the caller.
      * @param serviceProvider The address of the service provider.
      */
-    error ProvisionManagerNotAuthorized(address caller, address serviceProvider);
+    error ProvisionManagerNotAuthorized(address serviceProvider, address caller);
 
     /**
      * @notice Thrown when a provision is not found.
@@ -85,7 +85,7 @@ abstract contract ProvisionManager is Initializable, GraphDirectory, ProvisionMa
     modifier onlyProvisionAuthorized(address serviceProvider) {
         require(
             _graphStaking().isAuthorized(msg.sender, serviceProvider, address(this)),
-            ProvisionManagerNotAuthorized(msg.sender, serviceProvider)
+            ProvisionManagerNotAuthorized(serviceProvider, msg.sender)
         );
         _;
     }
diff --git a/packages/subgraph-service/test/subgraphService/allocation/start.t.sol b/packages/subgraph-service/test/subgraphService/allocation/start.t.sol
index 9157444fb..f5d76a350 100644
--- a/packages/subgraph-service/test/subgraphService/allocation/start.t.sol
+++ b/packages/subgraph-service/test/subgraphService/allocation/start.t.sol
@@ -60,8 +60,8 @@ contract SubgraphServiceAllocationStartTest is SubgraphServiceTest {
         bytes memory data = _generateData(tokens);
         vm.expectRevert(abi.encodeWithSelector(
             ProvisionManager.ProvisionManagerNotAuthorized.selector,
-            users.operator,
-            users.indexer
+            users.indexer,
+            users.operator
         ));
         subgraphService.startService(users.indexer, data);
     }
diff --git a/packages/subgraph-service/test/subgraphService/allocation/stop.t.sol b/packages/subgraph-service/test/subgraphService/allocation/stop.t.sol
index ee5958115..8a2b2a284 100644
--- a/packages/subgraph-service/test/subgraphService/allocation/stop.t.sol
+++ b/packages/subgraph-service/test/subgraphService/allocation/stop.t.sol
@@ -49,8 +49,8 @@ contract SubgraphServiceAllocationStopTest is SubgraphServiceTest {
         vm.expectRevert(
             abi.encodeWithSelector(
                 ProvisionManager.ProvisionManagerNotAuthorized.selector,
-                users.operator,
-                users.indexer
+                users.indexer,
+                users.operator
             )
         );
         subgraphService.stopService(users.indexer, data);
diff --git a/packages/subgraph-service/test/subgraphService/collect/query/query.t.sol b/packages/subgraph-service/test/subgraphService/collect/query/query.t.sol
index 6ad7b5347..7f57f06f8 100644
--- a/packages/subgraph-service/test/subgraphService/collect/query/query.t.sol
+++ b/packages/subgraph-service/test/subgraphService/collect/query/query.t.sol
@@ -112,8 +112,8 @@ contract SubgraphServiceRegisterTest is SubgraphServiceTest {
         vm.expectRevert(
             abi.encodeWithSelector(
                 ProvisionManager.ProvisionManagerNotAuthorized.selector,
-                users.operator,
-                users.indexer
+                users.indexer,
+                users.operator
             )
         );
         subgraphService.collect(users.indexer, paymentType, data);
diff --git a/packages/subgraph-service/test/subgraphService/provider/register.t.sol b/packages/subgraph-service/test/subgraphService/provider/register.t.sol
index 1df1f5571..6a4a36737 100644
--- a/packages/subgraph-service/test/subgraphService/provider/register.t.sol
+++ b/packages/subgraph-service/test/subgraphService/provider/register.t.sol
@@ -41,8 +41,8 @@ contract SubgraphServiceProviderRegisterTest is SubgraphServiceTest {
         resetPrank(users.operator);
         vm.expectRevert(abi.encodeWithSelector(
             ProvisionManager.ProvisionManagerNotAuthorized.selector,
-            users.operator,
-            users.indexer
+            users.indexer,
+            users.operator
         ));
         bytes memory data = abi.encode("url", "geoHash", users.rewardsDestination);
         subgraphService.register(users.indexer, data);
diff --git a/packages/subgraph-service/test/subgraphService/provision/accept.t.sol b/packages/subgraph-service/test/subgraphService/provision/accept.t.sol
index 1c8191275..58fccdd3a 100644
--- a/packages/subgraph-service/test/subgraphService/provision/accept.t.sol
+++ b/packages/subgraph-service/test/subgraphService/provision/accept.t.sol
@@ -47,8 +47,8 @@ contract SubgraphServiceProvisionAcceptTest is SubgraphServiceTest {
         resetPrank(users.operator);
         vm.expectRevert(abi.encodeWithSelector(
             ProvisionManager.ProvisionManagerNotAuthorized.selector,
-            users.operator,
-            users.indexer
+            users.indexer,
+            users.operator
         ));
         subgraphService.acceptProvision(users.indexer, "");
     }