diff --git a/io.c b/io.c
index 0cdc469..5ee967c 100644
--- a/io.c
+++ b/io.c
@@ -182,7 +182,11 @@
 {
 #if SIZEOF_LONG == SIZEOF_LONG_LONG
 # if SUPPORTED_PERSONALITIES > 1
+#  ifdef X86_64
+	if (current_personality != 1)
+#  else
 	if (current_wordsize == sizeof(long))
+#  endif
 # endif
 		tprintf("%lu", (unsigned long) tcp->u_arg[arg]);
 # if SUPPORTED_PERSONALITIES > 1