diff --git a/doc/changelog.txt b/doc/changelog.txt
index 18e74ee..a292c7d 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -1,5 +1,8 @@
 
 
+- fuzzy: need to account for kernel-level modified variables in .userspacesize
+
+
 Xtables-addons 1.13 (March 23 2009)
 ===================================
 - added a reworked ipv4options match
diff --git a/extensions/libxt_fuzzy.c b/extensions/libxt_fuzzy.c
index df55604..c2b96fe 100644
--- a/extensions/libxt_fuzzy.c
+++ b/extensions/libxt_fuzzy.c
@@ -9,6 +9,7 @@
  */
 #include <getopt.h>
 #include <netdb.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -102,7 +103,7 @@ static struct xtables_match fuzzy_mt_reg = {
 	.name          = "fuzzy",
 	.version       = XTABLES_VERSION,
 	.size          = XT_ALIGN(sizeof(struct xt_fuzzy_mtinfo)),
-	.userspacesize = XT_ALIGN(sizeof(struct xt_fuzzy_mtinfo)),
+	.userspacesize = offsetof(struct xt_fuzzy_mtinfo, packets_total),
 	.help          = fuzzy_mt_help,
 	.init          = fuzzy_mt_init,
 	.parse         = fuzzy_mt_parse,