diff --git a/cc/x86_64_device.go b/cc/x86_64_device.go
index 4ae6971..dd8972d 100644
--- a/cc/x86_64_device.go
+++ b/cc/x86_64_device.go
@@ -76,7 +76,7 @@
 			"-march=core-avx-i",
 		},
 		"sandybridge": []string{
-			"-march=corei7-avx",
+			"-march=corei7",
 		},
 		"silvermont": []string{
 			"-march=slm",
@@ -125,8 +125,6 @@
 		"sse4",
 		"sse4_1",
 		"sse4_2",
-		"aes_ni",
-		"avx",
 		"popcnt")
 	common.RegisterArchFeatures(common.X86_64, "silvermont",
 		"ssse3",
diff --git a/cc/x86_device.go b/cc/x86_device.go
index f3a4b08..5ba442c 100644
--- a/cc/x86_device.go
+++ b/cc/x86_device.go
@@ -77,7 +77,7 @@
 			"-mfpmath=sse",
 		},
 		"sandybridge": []string{
-			"-march=corei7-avx",
+			"-march=corei7",
 			"-mfpmath=sse",
 		},
 		"silvermont": []string{
@@ -126,8 +126,6 @@
 		"sse4",
 		"sse4_1",
 		"sse4_2",
-		"aes_ni",
-		"avx",
 		"popcnt")
 	common.RegisterArchFeatures(common.X86, "silvermont",
 		"ssse3",