diff --git a/support/src/test/java/libcore/java/security/CpuFeatures.java b/support/src/test/java/libcore/java/security/CpuFeatures.java
index 4c4c8a00..8ab610f 100644
--- a/support/src/test/java/libcore/java/security/CpuFeatures.java
+++ b/support/src/test/java/libcore/java/security/CpuFeatures.java
@@ -44,7 +44,7 @@
             }
         } else if (instructionSet.startsWith("x86")) {
             // x86 CPUs with the "aes" flag and running in 64bit mode should have hardware AES.
-            if (VMRuntime.is64BitInstructionSet(instructionSet)) {
+            if ("x86_64".equals(instructionSet)) {
                 List<String> flags = getListFromCpuinfo("flags");
                 if (flags != null && flags.contains("aes")) {
                     return true;