diff --git a/keyboards/yowkees/keyball39/config.h b/keyboards/yowkees/keyball39/config.h
index 1a1560e44af..0c96642e6ae 100644
--- a/keyboards/yowkees/keyball39/config.h
+++ b/keyboards/yowkees/keyball39/config.h
@@ -32,6 +32,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // it has been reported to work well in such cases.
 //#define SPLIT_WATCHDOG_ENABLE
 
+// PMW3360 configuration
+#define PMW33XX_CS_PIN B6
+
 #define SPLIT_TRANSACTION_IDS_KB KEYBALL_GET_INFO, KEYBALL_GET_MOTION, KEYBALL_SET_CPI
 
 // RGB LED settings