diff --git a/libkc3/sym.c b/libkc3/sym.c
index d4575dc..72791d4 100644
--- a/libkc3/sym.c
+++ b/libkc3/sym.c
@@ -41,7 +41,7 @@ const s_sym g_sym_Complex = {{{NULL}, 7, {"Complex"}}};
const s_sym g_sym_Cow = {{{NULL}, 3, {"Cow"}}};
const s_sym g_sym_F32 = {{{NULL}, 3, {"F32"}}};
const s_sym g_sym_F64 = {{{NULL}, 3, {"F64"}}};
-const s_sym g_sym_F128 = {{{NULL}, 3, {"F128"}}};
+const s_sym g_sym_F128 = {{{NULL}, 4, {"F128"}}};
const s_sym g_sym_Fact = {{{NULL}, 4, {"Fact"}}};
const s_sym g_sym_FactW = {{{NULL}, 5, {"FactW"}}};
const s_sym g_sym_Fn = {{{NULL}, 2, {"Fn"}}};