diff --git a/converter/ps2_usb/config.h b/converter/ps2_usb/config.h
index 2fd3ad7f..ceee05b0 100644
--- a/converter/ps2_usb/config.h
+++ b/converter/ps2_usb/config.h
@@ -29,8 +29,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 /* matrix size */
-#define MATRIX_ROWS 32  // keycode bit: 3-0
-#define MATRIX_COLS 8   // keycode bit: 6-4
+#define MATRIX_ROWS 32  // keycode bit: 7-3
+#define MATRIX_COLS 8   // keycode bit: 2-0
 
 
 /* key combination for command */