diff --git a/src/App/MaterialObject.cpp b/src/App/MaterialObject.cpp
index bbb845a93..43f0bc189 100644
--- a/src/App/MaterialObject.cpp
+++ b/src/App/MaterialObject.cpp
@@ -36,7 +36,7 @@ PROPERTY_SOURCE(App::MaterialObject, App::DocumentObject)
 
 MaterialObject::MaterialObject() 
 {
-    ADD_PROPERTY_TYPE(Material,(),"Material",Prop_None,"Material key/valu map");
+    ADD_PROPERTY_TYPE(Material,(),"Material",Prop_None,"Material key/value map");
 
 }