1 files changed, 1 insertions, 1 deletions

diff --git a/keyboards/preonic/rev3/rev3.c b/keyboards/preonic/rev3/rev3.c
index 161c1c963..ec8a56108 100644
--- a/keyboards/preonic/rev3/rev3.c
+++ b/keyboards/preonic/rev3/rev3.c
@@ -63,7 +63,7 @@ void dip_switch_update_user(uint8_t index, bool active) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{5, 4}, {4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
     {{5, 5}, {4, 5}, {3, 5}, {2, 5}, {1, 5}, {0, 5}},
     {{5, 6}, {4, 6}, {3, 6}, {2, 6}, {1, 6}, {0, 6}},