1 files changed, 2 insertions, 2 deletions
diff --git a/src/lock.h b/src/lock.h
index a1847c9..4d6693e 100644
--- a/src/lock.h
+++ b/src/lock.h
@@ -21,8 +21,8 @@
  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  */
 
-int device_lock(char *dev, char*appname);
-int device_lock_first(char*appname, char *dev, size_t l);
+int device_lock(const char *dev, const char*appname);
+int device_lock_first(const char*appname, char *dev, size_t l);
 void device_unlock(void);
 
 #endif