diff --git a/os/portable.h b/os/portable.h
index 6b86dc78..4ed09558 100644
--- a/os/portable.h
+++ b/os/portable.h
@@ -84,11 +84,22 @@
 #define CONFIG_X86_64 1
 #endif
 
-#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32)
+#if defined(__aarch64__)
+#if defined(__ARM_NEON) || defined(__ARM_NEON__)
+#define CONFIG_NEON 1
+#endif
+#if defined(__ARM_FEATURE_CRC32)
 #define CONFIG_ARM_CRC 1
 #endif
 #endif
 
+#if defined(__arm__)
+#if defined(__ARM_NEON) || defined(__ARM_NEON__)
+#define CONFIG_NEON32 1
+#endif
+#endif
+#endif
+
 /**
  * Includes some platform specific headers.
  */