diff --git a/app/app.go b/app/app.go
index 91b7687cda..9a71ab99d2 100644
--- a/app/app.go
+++ b/app/app.go
@@ -692,7 +692,7 @@ func New(
 
 	// Create static IBC router, add transfer route, then set and seal it
 	ibcRouter := porttypes.NewRouter()
-	// Add ontroller & ica auth modules to IBC router
+	// Add controller & ica auth modules to IBC router
 	ibcRouter.
 		AddRoute(icaauthtypes.ModuleName, icaControllerStack).
 		AddRoute(icacontrollertypes.SubModuleName, icaControllerStack).
diff --git a/integration_tests/test_basic.py b/integration_tests/test_basic.py
index 369f76f0cf..4c397f6d61 100644
--- a/integration_tests/test_basic.py
+++ b/integration_tests/test_basic.py
@@ -156,7 +156,7 @@ def test_native_call(cronos):
     """
     test contract native call on cronos network
     - deploy test contract
-    - run native call, expect failure, becuase no native fund in contract
+    - run native call, expect failure, because no native fund in contract
     - send native tokens to contract account
     - run again, expect success and check balance
     """
@@ -252,7 +252,7 @@ def test_statesync(cronos):
     # check query chain state works
     assert not get_sync_info(clustercli.status(i))["catching_up"]
 
-    # check query old transaction does't work
+    # check query old transaction doesn't work
     # Get we3 provider
     base_port = ports.evmrpc_port(clustercli.base_port(i))
     print("json-rpc port:", base_port)
diff --git a/nix/build_overlay.nix b/nix/build_overlay.nix
index 476654e669..2870eae80e 100644
--- a/nix/build_overlay.nix
+++ b/nix/build_overlay.nix
@@ -1,4 +1,4 @@
-# some basic overlays nessesary for the build
+# some basic overlays necessary for the build
 final: super: {
   rocksdb = final.callPackage ./rocksdb.nix { };
 }