diff --git a/src/Mod/Part/App/OCCError.h b/src/Mod/Part/App/OCCError.h
index 19e8208179..27b8ffd6ac 100644
--- a/src/Mod/Part/App/OCCError.h
+++ b/src/Mod/Part/App/OCCError.h
@@ -50,7 +50,6 @@
 # include <Standard_Overflow.hxx>
 # include <Standard_ProgramError.hxx>
 # include <Standard_RangeError.hxx>
-# include <Standard_TooManyUsers.hxx>
 # include <Standard_TypeMismatch.hxx>
 # include <Standard_Underflow.hxx>