diff --git a/src/c/symbols_list.h b/src/c/symbols_list.h
index 457faf4ae..5b00119bd 100755
--- a/src/c/symbols_list.h
+++ b/src/c/symbols_list.h
@@ -1361,7 +1361,9 @@ cl_symbols[] = {
 {KEY_ "GENSYM", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "HOST", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "IF-DOES-NOT-EXIST", KEYWORD, NULL, -1, OBJNULL},
+{KEY_ "IF-ERROR-EXISTS", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "IF-EXISTS", KEYWORD, NULL, -1, OBJNULL},
+{KEY_ "IF-INPUT-DOES-NOT-EXIST", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "IF-OUTPUT-EXISTS", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "IGNORE", KEYWORD, NULL, -1, OBJNULL},
 {KEY_ "IMPORT-FROM", KEYWORD, NULL, -1, OBJNULL},
diff --git a/src/c/symbols_list2.h b/src/c/symbols_list2.h
index 274023232..a0a546681 100644
--- a/src/c/symbols_list2.h
+++ b/src/c/symbols_list2.h
@@ -1361,7 +1361,9 @@ cl_symbols[] = {
 {KEY_ "GENSYM",NULL},
 {KEY_ "HOST",NULL},
 {KEY_ "IF-DOES-NOT-EXIST",NULL},
+{KEY_ "IF-ERROR-EXISTS",NULL},
 {KEY_ "IF-EXISTS",NULL},
+{KEY_ "IF-INPUT-DOES-NOT-EXIST",NULL},
 {KEY_ "IF-OUTPUT-EXISTS",NULL},
 {KEY_ "IGNORE",NULL},
 {KEY_ "IMPORT-FROM",NULL},