diff --git a/gtkknob.c b/gtkknob.c
index 9c44faf..4f6cf3f 100644
--- a/gtkknob.c
+++ b/gtkknob.c
@@ -18,7 +18,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  *****************************************************************************/
 
 #include <math.h>
diff --git a/gtkknob.h b/gtkknob.h
index f26025f..f602cd7 100644
--- a/gtkknob.h
+++ b/gtkknob.h
@@ -17,7 +17,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  *****************************************************************************/
 #ifndef __GTK_KNOB_H__
 #define __GTK_KNOB_H__