diff --git a/target-i386/helper.c b/target-i386/helper.c
index 9a50da6..a706cae 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -44,7 +44,7 @@ static const char *feature_name[] = {
 static const char *ext_feature_name[] = {
    "pni" /* Intel,AMD sse3 */, NULL, NULL, "monitor", "ds_cpl", "vmx", NULL
/* Linux smx */, "est",
    "tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
-    NULL, NULL, "dca", NULL, NULL, "x2apic", NULL, "popcnt",
+    NULL, NULL, "dca", "sse4.1", "sse4.2", "x2apic", NULL, "popcnt",
    NULL, NULL, NULL, NULL, NULL, NULL, NULL, "hypervisor",
 };