diff --git a/ipv6logconv/ipv6logconv.c b/ipv6logconv/ipv6logconv.c

index f31f5be..4483757 100644

--- a/ipv6logconv/ipv6logconv.c

+++ b/ipv6logconv/ipv6logconv.c

@@ -58,7 +58,7 @@ static void lineparser(const long int outputtype);

 /* LRU cache */

 #define CACHE_LRU_SIZE 200

-

+int cache_lru_limit;

 static int      cache_lru_max = 0;

 static int      cache_lru_last = 0;

 static char     cache_lru_key_token[CACHE_LRU_SIZE][NI_MAXHOST];

diff --git a/ipv6logconv/ipv6logconv.h b/ipv6logconv/ipv6logconv.h

index 946b042..9699e2c 100644

--- a/ipv6logconv/ipv6logconv.h

+++ b/ipv6logconv/ipv6logconv.h

@@ -20,8 +20,7 @@

 #define DEBUG_ipv6logconv_general      0x00000001l

 #define DEBUG_ipv6logconv_processing   0x00000002l

-/* prototyping */

-int cache_lru_limit;

+extern int cache_lru_limit;

 extern int feature_reg;

 extern int feature_ieee;