diff --git a/src/errors.h b/src/errors.h
index e4836bc..d58da73 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -397,3 +397,5 @@
 	INIT(= N_("E1179: Failed to extract PWD from %s, check your shell's config related to OSC 7"));
 EXTERN char e_variable_arguments_type_must_be_list_str[]
 	INIT(= N_("E1180: Variable arguments type must be a list: %s"));
+EXTERN char e_cannot_use_underscore_here[]
+	INIT(= N_("E1181: Cannot use an underscore here"));