diff --git a/modules/apps/callbacks/testing/simapp/app.go b/modules/apps/callbacks/testing/simapp/app.go
index 7d1d6013b6b..bbe9e17d252 100644
--- a/modules/apps/callbacks/testing/simapp/app.go
+++ b/modules/apps/callbacks/testing/simapp/app.go
@@ -522,7 +522,7 @@ func NewSimApp(
 
 	// Create Transfer Stack
 	// SendPacket, since it is originating from the application to core IBC:
-	// transferKeeper.SendPacket -> fee.SendPacket -> callbacks.SendPacket -> channel.SendPacket
+	// transferKeeper.SendPacket -> callbacks.SendPacket -> feeKeeper.SendPacket -> channel.SendPacket
 
 	// RecvPacket, message that originates from core IBC and goes down to app, the flow is the other way
 	// channel.RecvPacket -> callbacks.OnRecvPacket -> fee.OnRecvPacket -> transfer.OnRecvPacket
@@ -545,7 +545,7 @@ func NewSimApp(
 
 	// Create Interchain Accounts Stack
 	// SendPacket, since it is originating from the application to core IBC:
-	// icaAuthModuleKeeper.SendTx -> icaController.SendPacket -> fee.SendPacket -> callbacks.SendPacket -> channel.SendPacket
+	// icaControllerKeeper.SendTx -> callbacks.SendPacket -> fee.SendPacket -> channel.SendPacket
 
 	// initialize ICA module with mock module as the authentication module on the controller side
 	var icaControllerStack porttypes.IBCModule
@@ -558,7 +558,7 @@ func NewSimApp(
 	app.ICAControllerKeeper.WithICS4Wrapper(icaControllerStack.(porttypes.Middleware))
 
 	// RecvPacket, message that originates from core IBC and goes down to app, the flow is:
-	// channel.RecvPacket -> callbacks.OnRecvPacket -> fee.OnRecvPacket -> icaHost.OnRecvPacket
+	// channel.RecvPacket -> fee.OnRecvPacket -> icaHost.OnRecvPacket
 
 	var icaHostStack porttypes.IBCModule
 	icaHostStack = icahost.NewIBCModule(app.ICAHostKeeper)
@@ -574,14 +574,13 @@ func NewSimApp(
 		AddRoute(ibcmock.ModuleName+icacontrollertypes.SubModuleName, icaControllerStack) // ica with mock auth module stack route to ica (top level of middleware stack)
 
 	// Create Mock IBC Fee module stack for testing
-	// SendPacket, since it is originating from the application to core IBC:
-	// mockModule.SendPacket -> fee.SendPacket -> channel.SendPacket
+	// SendPacket, mock module cannot send packets
 
 	// OnRecvPacket, message that originates from core IBC and goes down to app, the flow is the otherway
-	// channel.RecvPacket -> fee.OnRecvPacket -> mockModule.OnRecvPacket
+	// channel.RecvPacket -> callbacks.OnRecvPacket -> fee.OnRecvPacket -> mockModule.OnRecvPacket
 
 	// OnAcknowledgementPacket as this is where fee's are paid out
-	// mockModule.OnAcknowledgementPacket -> fee.OnAcknowledgementPacket -> channel.OnAcknowledgementPacket
+	// mockModule.OnAcknowledgementPacket -> callbacks.OnAcknowledgementPacket -> fee.OnAcknowledgementPacket -> channel.OnAcknowledgementPacket
 
 	// create fee wrapped mock module
 	feeMockModule := ibcmock.NewIBCModule(&mockModule, ibcmock.NewIBCApp(MockFeePort, scopedFeeMockKeeper))
diff --git a/testing/simapp/app.go b/testing/simapp/app.go
index b267158af08..04486fe65d4 100644
--- a/testing/simapp/app.go
+++ b/testing/simapp/app.go
@@ -534,7 +534,7 @@ func NewSimApp(
 
 	// Create Interchain Accounts Stack
 	// SendPacket, since it is originating from the application to core IBC:
-	// icaAuthModuleKeeper.SendTx -> icaController.SendPacket -> fee.SendPacket -> channel.SendPacket
+	// icaControllerKeeper.SendTx -> fee.SendPacket -> channel.SendPacket
 
 	// initialize ICA module with mock module as the authentication module on the controller side
 	var icaControllerStack porttypes.IBCModule
@@ -560,8 +560,7 @@ func NewSimApp(
 		AddRoute(ibcmock.ModuleName+icacontrollertypes.SubModuleName, icaControllerStack) // ica with mock auth module stack route to ica (top level of middleware stack)
 
 	// Create Mock IBC Fee module stack for testing
-	// SendPacket, since it is originating from the application to core IBC:
-	// mockModule.SendPacket -> fee.SendPacket -> channel.SendPacket
+	// SendPacket, mock module cannot send packets
 
 	// OnRecvPacket, message that originates from core IBC and goes down to app, the flow is the otherway
 	// channel.RecvPacket -> fee.OnRecvPacket -> mockModule.OnRecvPacket