diff --git a/regint.h b/regint.h
index 80d3523126..97b2e1ba62 100644
--- a/regint.h
+++ b/regint.h
@@ -48,6 +48,10 @@
 #endif
 #endif
 
+#if !defined(UNALIGNED_WORD_ACCESS) && defined(__GNUC__) && __GNUC__ >= 6
+# define UNALIGNED_WORD_ACCESS 0
+#endif
+
 #ifndef UNALIGNED_WORD_ACCESS
 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
     defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || \