diff --git a/src/c/symbols_list.h b/src/c/symbols_list.h
index 7108e67ae..c0fd60fd8 100755
--- a/src/c/symbols_list.h
+++ b/src/c/symbols_list.h
@@ -1791,7 +1791,7 @@ cl_symbols[] = {
 
 {EXT_ "*ACTION-ON-UNDEFINED-VARIABLE*", EXT_SPECIAL, NULL, -1, ECL_NIL},
 
-{SYS_ "SET-BUFFERING-MODE", SI_ORDINARY, si_set_buffering_mode, 2, OBJNULL},
+{EXT_ "SET-BUFFERING-MODE", EXT_ORDINARY, si_set_buffering_mode, 2, OBJNULL},
 {KEY_ "NONE", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "LINE-BUFFERED", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "FULLY-BUFFERED", KEYWORD, NULL, -1, OBJNULL},
diff --git a/src/c/symbols_list2.h b/src/c/symbols_list2.h
index d541baeb1..fb8e815ff 100644
--- a/src/c/symbols_list2.h
+++ b/src/c/symbols_list2.h
@@ -1791,7 +1791,7 @@ cl_symbols[] = {
 
 {EXT_ "*ACTION-ON-UNDEFINED-VARIABLE*",NULL},
 
-{SYS_ "SET-BUFFERING-MODE","si_set_buffering_mode"},
+{EXT_ "SET-BUFFERING-MODE","si_set_buffering_mode"},
 {KEY_ "NONE",NULL},
 {KEY_ "LINE-BUFFERED",NULL},
 {KEY_ "FULLY-BUFFERED",NULL},