1 files changed, 1 insertions, 0 deletions
diff --git a/lib.h b/lib.h
index fbdc06a8..86cf0b01 100644
--- a/lib.h
+++ b/lib.h
@@ -392,6 +392,7 @@ extern val eof_s, eol_s, assert_s;
 extern val error_s, type_error_s, internal_error_s;
 extern val numeric_error_s, range_error_s;
 extern val query_error_s, file_error_s, process_error_s, syntax_error_s;
+extern val system_error_s;
 extern val gensym_counter_s;
 
 #define gensym_counter (deref(lookup_var_l(nil, gensym_counter_s)))