diff --git a/core/combo/arch/x86/x86.mk b/core/combo/arch/x86/x86.mk
index c98d57896d..f0704263b7 100644
--- a/core/combo/arch/x86/x86.mk
+++ b/core/combo/arch/x86/x86.mk
@@ -13,11 +13,7 @@ ARCH_X86_HAVE_MOVBE := false
 ARCH_X86_HAVE_POPCNT := false
 
 
-# Some intrinsic functions used by libcxx only exist for prescott or newer CPUs,
-# when compiled with clang/llvm.
-# But g++ could have internal error with march=prescott. So we will use
-# march=i686 until the g++ error is fixed or all Android modules can work around
-# that problem, see b/18174291.
+# Some intrinsic functions used by libcxx only exist for prescott or newer CPUs.
 arch_variant_cflags := \
-    -march=i686 \
+    -march=prescott \