diff --git a/src/drivers/net/pcnet32.c b/src/drivers/net/pcnet32.c
index 0328cf2c..63353e3f 100644
--- a/src/drivers/net/pcnet32.c
+++ b/src/drivers/net/pcnet32.c
@@ -67,7 +67,7 @@ static struct nic_operations pcnet32_operations;
 
 /* End Etherboot Specific */
 
-int cards_found /* __initdata */ ;
+static int cards_found = 0 /* __initdata */ ;
 
 #ifdef REMOVE
 /* FIXME: Remove these they are probably pointless */