1 files changed, 1 insertions, 1 deletions
diff --git a/bswap.h b/bswap.h
index 0632a9d9af..c52933e493 100644
--- a/bswap.h
+++ b/bswap.h
@@ -43,7 +43,7 @@
 
 #endif /* !HAVE_BYTESWAP_H */
 
-#if defined(__alpha__) || defined (__ia64__)
+#if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
 #define HOST_LONG_BITS 64
 #else
 #define HOST_LONG_BITS 32