diff --git a/extensions/libxt_psd.c b/extensions/libxt_psd.c
index 483c69a..bd03480 100644
--- a/extensions/libxt_psd.c
+++ b/extensions/libxt_psd.c
@@ -30,6 +30,8 @@
 #include "xt_psd.h"
 #include "compat_user.h"
 
+#define SCAN_DELAY_THRESHOLD		300
+
 /* Function which prints out usage message. */
 static void psd_mt_help(void) {
 	printf(
diff --git a/extensions/xt_psd.c b/extensions/xt_psd.c
index f5fcca0..b67b64e 100644
--- a/extensions/xt_psd.c
+++ b/extensions/xt_psd.c
@@ -40,6 +40,15 @@ MODULE_AUTHOR(" Mohd Nawawi Mohamad Jamili <nawawi@tracenetworkcorporation.com>"
 MODULE_DESCRIPTION("Xtables: PSD - portscan detection");
 MODULE_ALIAS("ipt_psd");
 
+/*
+ * Keep track of up to LIST_SIZE source addresses, using a hash table of
+ * HASH_SIZE entries for faster lookups, but limiting hash collisions to
+ * HASH_MAX source addresses per the same hash value.
+ */
+#define LIST_SIZE			0x100
+#define HASH_LOG			9
+#define HASH_SIZE			(1 << HASH_LOG)
+#define HASH_MAX			0x10
 
 /*
  * Information we keep per each target port
diff --git a/extensions/xt_psd.h b/extensions/xt_psd.h
index ac65687..89b48fe 100644
--- a/extensions/xt_psd.h
+++ b/extensions/xt_psd.h
@@ -19,17 +19,6 @@
 #define SCAN_MIN_COUNT			7
 #define SCAN_MAX_COUNT			(SCAN_MIN_COUNT * PORT_WEIGHT_PRIV)
 #define SCAN_WEIGHT_THRESHOLD		SCAN_MAX_COUNT
-#define SCAN_DELAY_THRESHOLD		(300) /* old usage of HZ here was erroneously and broke under uml */
-
-/*
- * Keep track of up to LIST_SIZE source addresses, using a hash table of
- * HASH_SIZE entries for faster lookups, but limiting hash collisions to
- * HASH_MAX source addresses per the same hash value.
- */
-#define LIST_SIZE			0x100
-#define HASH_LOG			9
-#define HASH_SIZE			(1 << HASH_LOG)
-#define HASH_MAX			0x10
 
 struct xt_psd_info {
 	__u32 weight_threshold;