diff --git a/keyboards/gmmk/pro/rev1/ansi/keymaps/via/keymap.c b/keyboards/gmmk/pro/rev1/ansi/keymaps/via/keymap.c
index be559b08..73e56752 100644
--- a/keyboards/gmmk/pro/rev1/ansi/keymaps/via/keymap.c
+++ b/keyboards/gmmk/pro/rev1/ansi/keymaps/via/keymap.c
@@ -76,3 +76,12 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 };
 // clang-format on
+
+#if defined(ENCODER_MAP_ENABLE)
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][2] = {
+    [0] = { ENCODER_CCW_CW(KC_VOLU, KC_VOLD) },
+    [1] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [2] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [3] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) }
+};
+#endif
diff --git a/keyboards/gmmk/pro/rev1/ansi/keymaps/via/rules.mk b/keyboards/gmmk/pro/rev1/ansi/keymaps/via/rules.mk
index 1e5b9980..4253f570 100644
--- a/keyboards/gmmk/pro/rev1/ansi/keymaps/via/rules.mk
+++ b/keyboards/gmmk/pro/rev1/ansi/keymaps/via/rules.mk
@@ -1 +1,2 @@
 VIA_ENABLE = yes
+ENCODER_MAP_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/gmmk/pro/rev1/iso/keymaps/via/keymap.c b/keyboards/gmmk/pro/rev1/iso/keymaps/via/keymap.c
index 612eead8..9a37242a 100644
--- a/keyboards/gmmk/pro/rev1/iso/keymaps/via/keymap.c
+++ b/keyboards/gmmk/pro/rev1/iso/keymaps/via/keymap.c
@@ -78,3 +78,12 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 };
 // clang-format on
+
+#if defined(ENCODER_MAP_ENABLE)
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][2] = {
+    [0] = { ENCODER_CCW_CW(KC_VOLU, KC_VOLD) },
+    [1] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [2] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [3] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) }
+};
+#endif
diff --git a/keyboards/gmmk/pro/rev1/iso/keymaps/via/rules.mk b/keyboards/gmmk/pro/rev1/iso/keymaps/via/rules.mk
index 1e5b9980..4253f570 100644
--- a/keyboards/gmmk/pro/rev1/iso/keymaps/via/rules.mk
+++ b/keyboards/gmmk/pro/rev1/iso/keymaps/via/rules.mk
@@ -1 +1,2 @@
 VIA_ENABLE = yes
+ENCODER_MAP_ENABLE = yes
\ No newline at end of file