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>