diff --git a/lib/ash/actions/create/create.ex b/lib/ash/actions/create/create.ex
index 79716004..53308bc2 100644
--- a/lib/ash/actions/create/create.ex
+++ b/lib/ash/actions/create/create.ex
@@ -448,7 +448,7 @@ defmodule Ash.Actions.Create do
   end
 
   defp validate_manual_action_return_result!(other, resource, action) do
-    raise Ash.Error.Framework.AssumptionFailed,
+    raise Ash.Error.Framework.InvalidReturnType,
       message: """
       Manual action #{inspect(action.name)} on #{inspect(resource)} returned an invalid result.
 
diff --git a/lib/ash/actions/destroy/destroy.ex b/lib/ash/actions/destroy/destroy.ex
index b75f5fb2..818f3e22 100644
--- a/lib/ash/actions/destroy/destroy.ex
+++ b/lib/ash/actions/destroy/destroy.ex
@@ -281,7 +281,7 @@ defmodule Ash.Actions.Destroy do
   end
 
   defp validate_manual_action_return_result!(other, resource, action) do
-    raise Ash.Error.Framework.AssumptionFailed,
+    raise Ash.Error.Framework.InvalidReturnType,
       message: """
       Manual action #{inspect(action.name)} on #{inspect(resource)} returned an invalid result.
 
diff --git a/lib/ash/actions/read/read.ex b/lib/ash/actions/read/read.ex
index 793f7938..cc925eb2 100644
--- a/lib/ash/actions/read/read.ex
+++ b/lib/ash/actions/read/read.ex
@@ -2089,7 +2089,7 @@ defmodule Ash.Actions.Read do
   end
 
   defp validate_manual_action_return_result!(other, resource, action) do
-    raise Ash.Error.Framework.AssumptionFailed,
+    raise Ash.Error.Framework.InvalidReturnType,
       message: """
       Manual action #{inspect(action.name)} on #{inspect(resource)} returned an invalid result.
 
diff --git a/lib/ash/actions/update/update.ex b/lib/ash/actions/update/update.ex
index 7aceb4ed..937bb082 100644
--- a/lib/ash/actions/update/update.ex
+++ b/lib/ash/actions/update/update.ex
@@ -558,7 +558,7 @@ defmodule Ash.Actions.Update do
   end
 
   defp validate_manual_action_return_result!(other, resource, action) do
-    raise Ash.Error.Framework.AssumptionFailed,
+    raise Ash.Error.Framework.InvalidReturnType,
       message: """
       Manual action #{inspect(action.name)} on #{inspect(resource)} returned an invalid result.