diff --git a/test/invariant-tests/AdapterList.Invariant.sol b/test/invariant-tests/AdapterList.Invariant.sol
index aa214ed..9b17a18 100644
--- a/test/invariant-tests/AdapterList.Invariant.sol
+++ b/test/invariant-tests/AdapterList.Invariant.sol
@@ -9,11 +9,11 @@ import "test/Setup.t.sol";
 import "test/contracts-mock/MockUniswapReceiver.sol";
 
 /// handler import
-import {SenderAdapterAddHandler} from "test/invariant-tests/handlers/SenderAdapterAdd.handler.sol";
+import {AdapterListHandler} from "test/invariant-tests/handlers/AdapterList.handler.sol";
 
-/// @notice invariants for adding adapters to multi bridge sender
+/// @notice invariants for maintaining adapter list on `MultiBridgeMessageSender`
 contract AdapterListInvariant is Setup {
-    SenderAdapterAddHandler public handler;
+    AdapterListHandler public handler;
 
     /// @notice initializes the setup
     function setUp() public override {
@@ -22,19 +22,25 @@ contract AdapterListInvariant is Setup {
 
         /// @dev selects fork and deploy the handlers
         vm.selectFork(fork[SRC_CHAIN_ID]);
-        handler = new SenderAdapterAddHandler(
+        handler = new AdapterListHandler(
             contractAddress[SRC_CHAIN_ID]["GAC"],
             contractAddress[SRC_CHAIN_ID]["MMA_SENDER"]
         );
+
+        /// @dev bind the handler as target for invariant
         targetContract(address(handler));
     }
 
     /// @notice invariant-1: adding an adapter should always increase the length of the adapter list
     /// @notice invariant-2: once a trusted executor is added, its entry should exist in the adapter list
     /// @notice invariant-3:  the adapter list should never contain duplicates
-    /// @notice invariant-4:  the adapter list should always be in orde
+    /// @notice invariant-4:  the adapter list should always be in order
+
+    /// @notice invariant-5: removing an adapter should always decrease the length of the adapter list
+    /// @notice invariant-6: once a trusted executor is removed, it should not persist in the adapter list
     function invariant_test_adapter_additions() public {
         MultiBridgeMessageSender targetContract = MultiBridgeMessageSender(contractAddress[SRC_CHAIN_ID]["MMA_SENDER"]);
+        
         if (handler.success()) {
             uint256 currAdds = handler.currAdds();
 
@@ -42,12 +48,12 @@ contract AdapterListInvariant is Setup {
             /// @dev if this asset passes then invariant-2 holds
             assertTrue(newAddition != address(0));
 
-            /// @dev if this revert then the final index is currAdds - 1 and the invariant-1 holds
+            /// @dev if this revert invariant-1 and invariant-5 holds
             try targetContract.senderAdapters(currAdds) {
                 assertFalse(1 == 2);
             } catch {}
 
-            /// @dev assertions for invariant-3 and invariant-4
+            /// @dev assertions for invariant-3, invariant-4, invariant-5, invariant-6
             if (currAdds > 1) {
                 for (uint256 i = currAdds; i > 0; i--) {
                     assertTrue(
diff --git a/test/invariant-tests/handlers/SenderAdapterAdd.handler.sol b/test/invariant-tests/handlers/AdapterList.Handler.sol
similarity index 67%
rename from test/invariant-tests/handlers/SenderAdapterAdd.handler.sol
rename to test/invariant-tests/handlers/AdapterList.Handler.sol
index 05024ae..3cf6746 100644
--- a/test/invariant-tests/handlers/SenderAdapterAdd.handler.sol
+++ b/test/invariant-tests/handlers/AdapterList.Handler.sol
@@ -8,9 +8,8 @@ import "forge-std/Test.sol";
 import {MessageSenderGAC} from "src/controllers/MessageSenderGAC.sol";
 import {MultiBridgeMessageSender} from "src/MultiBridgeMessageSender.sol";
 
-/// @notice handler for testing adding adapters to multi message sender
-/// @dev simulates the ideal criteria for a successful adapter addition
-contract SenderAdapterAddHandler is Test {
+/// @notice handler for testing maintaining adapter list
+contract AdapterListHandler is Test {
     /// @notice local state
     MultiBridgeMessageSender public multiBridgeMessageSender;
     MessageSenderGAC public gac;
@@ -18,7 +17,7 @@ contract SenderAdapterAddHandler is Test {
     bool public success;
     uint256 public currAdds;
 
-    /// @notice modifier to prank the add sender adapter call
+    /// @notice modifier to prank caller
     modifier prank(address _prankster) {
         vm.startPrank(_prankster);
         _;
@@ -34,6 +33,7 @@ contract SenderAdapterAddHandler is Test {
     /// @notice helper for adding new adapters
     function addSenderAdapters(address _newSenderAdapter) external prank(gac.getGlobalOwner()) {
         success = false;
+
         vm.assume(_newSenderAdapter != address(0));
 
         address[] memory _additions = new address[](1);
@@ -44,4 +44,18 @@ contract SenderAdapterAddHandler is Test {
             currAdds++;
         } catch {}
     }
+
+    /// @notice helper for removing existing adapters
+    function removeSenderAdapters() external prank(gac.getGlobalOwner()) {
+        vm.assume(currAdds > 0);
+        success = false;
+
+        address[] memory _removals = new address[](1);
+        _removals[0] = multiBridgeMessageSender.senderAdapters(currAdds - 1);
+
+        try multiBridgeMessageSender.removeSenderAdapters(_removals) {
+            success = true;
+            currAdds--;
+        } catch {}
+    }
 }