diff --git a/Source/Editor/Content/Import/ModelImportEntry.cs b/Source/Editor/Content/Import/ModelImportEntry.cs
index cf4672154..d0a680f3a 100644
--- a/Source/Editor/Content/Import/ModelImportEntry.cs
+++ b/Source/Editor/Content/Import/ModelImportEntry.cs
@@ -566,6 +566,8 @@ namespace FlaxEditor.Content.Import
             }
             internal static void Free(InternalOptionsNative unmanaged)
             {
+                ManagedString.Free(unmanaged.CollisionMeshesPrefix);
+                ManagedString.Free(unmanaged.RootNodeName);
             }
         }
 
diff --git a/Source/Editor/Editor.cs b/Source/Editor/Editor.cs
index dcf41a072..2e38b7d90 100644
--- a/Source/Editor/Editor.cs
+++ b/Source/Editor/Editor.cs
@@ -1259,6 +1259,8 @@ namespace FlaxEditor
             }
             internal static void Free(VisualScriptLocalNative unmanaged)
             {
+                ManagedString.Free(unmanaged.Value);
+                ManagedString.Free(unmanaged.ValueTypeName);
             }
         }