diff --git a/mod_hello.c b/mod_hello.c
index 98f63c4..4119ca9 100644
--- a/mod_hello.c
+++ b/mod_hello.c
@@ -36,17 +36,20 @@ long hello_fib(long times, long n1, long n2)
     return next;
 }
 
+
+static char *sym_name = "files";
+module_param(sym_name, charp, S_IRUGO);
+
 static int __init hello_init(void)
 {
     long f_int, f_cap, f_start1, f_start2;
-    unsigned long sym_addr;
-    char *sym_name;
     char filename[255];
     unsigned long jiffies_start, jiffies_diff;
+    unsigned long sym_addr;
+
 
     hello_print_hello();
 
-    sym_name = "files";
     printk("looking up '%s'\n", sym_name);
     sym_addr = kallsyms_lookup_name(sym_name);
     printk("%s 0x%lx\n", sym_name, sym_addr);