diff --git a/Gems/AtomLyIntegration/CommonFeatures/Code/Source/Material/EditorMaterialSystemComponent.cpp b/Gems/AtomLyIntegration/CommonFeatures/Code/Source/Material/EditorMaterialSystemComponent.cpp
index 83ddbf46c5..a6b595940f 100644
--- a/Gems/AtomLyIntegration/CommonFeatures/Code/Source/Material/EditorMaterialSystemComponent.cpp
+++ b/Gems/AtomLyIntegration/CommonFeatures/Code/Source/Material/EditorMaterialSystemComponent.cpp
@@ -137,7 +137,7 @@ namespace AZ
                 arguments.append(QString("--project-path=%1").arg(projectPath.c_str()));
             }
 
-            AtomToolsFramework::LaunchTool("MaterialEditor", ".exe", arguments);
+            AtomToolsFramework::LaunchTool("MaterialEditor", AZ_TRAIT_OS_EXECUTABLE_EXTENSION, arguments);
         }
 
         void EditorMaterialSystemComponent::OpenMaterialInspector(