diff --git a/smc-command/smc.h b/smc-command/smc.h
index 34e17aa..b0a11e1 100755
--- a/smc-command/smc.h
+++ b/smc-command/smc.h
@@ -98,7 +98,7 @@ typedef struct {
 
 typedef unsigned char              SMCBytes_t[32];
 
-UInt8 fannum[] = "0123456789ABCDEFGHIJ";
+static UInt8 fannum[] = "0123456789ABCDEFGHIJ";
 
 typedef struct {
   UInt32                  key;