diff --git a/sysbench/sb_options.c b/sysbench/sb_options.c
index 05ca013..ac4ff70 100644
--- a/sysbench/sb_options.c
+++ b/sysbench/sb_options.c
@@ -82,7 +82,7 @@ int sb_register_arg_set(sb_arg_t *set)
   return 0;
 }
 
-option_t *sb_find_option(char *name)
+option_t *sb_find_option(const char *name)
 {
   return find_option(&options, name);
 }
diff --git a/sysbench/sb_options.h b/sysbench/sb_options.h
index 0304eab..28ebdad 100644
--- a/sysbench/sb_options.h
+++ b/sysbench/sb_options.h
@@ -72,7 +72,7 @@ int sb_register_arg_set(sb_arg_t *set);
 int set_option(const char *name, const char *value, sb_arg_type_t type);
 
 /* Find option specified by 'name' */
-option_t *sb_find_option(char *name);
+option_t *sb_find_option(const char *name);
 
 /* Print list of options specified by 'opts' */
 void sb_print_options(sb_arg_t *opts);