diff --git a/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs b/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
index b0bceac32..282d07be3 100644
--- a/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
+++ b/src/modules/Elsa.Workflows.Core/Services/ActivityRegistry.cs
@@ -24,7 +24,7 @@ public class ActivityRegistry(IActivityDescriber activityDescriber, IEnumerable<
     }
 
     /// <inheritdoc />
-    public IEnumerable<ActivityDescriptor> ListAll() => _activityDescriptors.Values.DistinctBy(x => x.TypeName);
+    public IEnumerable<ActivityDescriptor> ListAll() => _activityDescriptors.Values;
 
     /// <inheritdoc />
     public IEnumerable<ActivityDescriptor> ListByProvider(Type providerType) => _providedActivityDescriptors.TryGetValue(providerType, out var descriptors) ? descriptors : ArraySegment<ActivityDescriptor>.Empty;
@@ -123,13 +123,13 @@ public class ActivityRegistry(IActivityDescriber activityDescriber, IEnumerable<
         foreach (var modifier in modifiers)
             modifier.Modify(descriptor);
 
-        // If the descriptor already exists, replace it. But log a warning.
+        // If the descriptor already exists, replace it. But log a warning.
         if (activityDescriptors.TryGetValue((descriptor.TypeName, descriptor.Version), out var existingDescriptor))
         {
-            // Remove the existing descriptor from the providerDescriptors collection.
+            // Remove the existing descriptor from the providerDescriptors collection.
             providerDescriptors.Remove(existingDescriptor);
 
-            // Log a warning.
+            // Log a warning.
             logger.LogWarning("Activity descriptor {ActivityType} v{ActivityVersion} was already registered. Replacing with new descriptor", descriptor.TypeName, descriptor.Version);
         }