diff --git a/src/globals.h b/src/globals.h
index b474aa8..4822bf3 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1749,6 +1749,7 @@
 EXTERN char e_continue[]	INIT(= N_("E586: :continue without :while or :for"));
 EXTERN char e_break[]		INIT(= N_("E587: :break without :while or :for"));
 EXTERN char e_nowhitespace[]	INIT(= N_("E274: No white space allowed before parenthesis"));
+EXTERN char e_lock_unlock[]	INIT(= N_("E940: Cannot lock or unlock variable %s"));
 #endif
 
 #ifdef FEAT_GUI_MAC