diff --git a/keyboards/gmmk/pro/rev1/ansi/keymaps/default/keymap.c b/keyboards/gmmk/pro/rev1/ansi/keymaps/default/keymap.c
index 6b48c6bcdf6..1294d64fe8d 100644
--- a/keyboards/gmmk/pro/rev1/ansi/keymaps/default/keymap.c
+++ b/keyboards/gmmk/pro/rev1/ansi/keymaps/default/keymap.c
@@ -59,3 +59,10 @@ 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_VOLD, KC_VOLU) },
+    [1] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) }
+};
+#endif
diff --git a/keyboards/gmmk/pro/rev1/ansi/keymaps/default/rules.mk b/keyboards/gmmk/pro/rev1/ansi/keymaps/default/rules.mk
new file mode 100644
index 00000000000..a40474b4d5c
--- /dev/null
+++ b/keyboards/gmmk/pro/rev1/ansi/keymaps/default/rules.mk
@@ -0,0 +1 @@
+ENCODER_MAP_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/gmmk/pro/rev1/ansi/keymaps/via/keymap.c b/keyboards/gmmk/pro/rev1/ansi/keymaps/via/keymap.c
index be559b082c7..73e56752b78 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 1e5b99807cb..4253f570f0b 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/default/keymap.c b/keyboards/gmmk/pro/rev1/iso/keymaps/default/keymap.c
index 2575eaa7f02..af0366d20da 100644
--- a/keyboards/gmmk/pro/rev1/iso/keymaps/default/keymap.c
+++ b/keyboards/gmmk/pro/rev1/iso/keymaps/default/keymap.c
@@ -59,3 +59,10 @@ 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_VOLD, KC_VOLU) },
+    [1] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) }
+};
+#endif
diff --git a/keyboards/gmmk/pro/rev1/iso/keymaps/default/rules.mk b/keyboards/gmmk/pro/rev1/iso/keymaps/default/rules.mk
new file mode 100644
index 00000000000..a40474b4d5c
--- /dev/null
+++ b/keyboards/gmmk/pro/rev1/iso/keymaps/default/rules.mk
@@ -0,0 +1 @@
+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 612eead8715..9a37242a4ef 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 1e5b99807cb..4253f570f0b 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
diff --git a/keyboards/gmmk/pro/rev2/ansi/keymaps/default/keymap.c b/keyboards/gmmk/pro/rev2/ansi/keymaps/default/keymap.c
index dc56a9ff8f7..30fd283d7d4 100644
--- a/keyboards/gmmk/pro/rev2/ansi/keymaps/default/keymap.c
+++ b/keyboards/gmmk/pro/rev2/ansi/keymaps/default/keymap.c
@@ -60,13 +60,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 // clang-format on
 
-#ifdef ENCODER_ENABLE
-bool encoder_update_user(uint8_t index, bool clockwise) {
-    if (clockwise) {
-      tap_code(KC_VOLU);
-    } else {
-      tap_code(KC_VOLD);
-    }
-    return false;
-}
-#endif // ENCODER_ENABLE
+#if defined(ENCODER_MAP_ENABLE)
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][2] = {
+    [0] = { ENCODER_CCW_CW(KC_VOLD, KC_VOLU) },
+    [1] = { ENCODER_CCW_CW(RGB_VAD, RGB_VAI) }
+};
+#endif
\ No newline at end of file
diff --git a/keyboards/gmmk/pro/rev2/ansi/keymaps/default/rules.mk b/keyboards/gmmk/pro/rev2/ansi/keymaps/default/rules.mk
new file mode 100644
index 00000000000..a40474b4d5c
--- /dev/null
+++ b/keyboards/gmmk/pro/rev2/ansi/keymaps/default/rules.mk
@@ -0,0 +1 @@
+ENCODER_MAP_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/gmmk/pro/rev2/iso/keymaps/default/keymap.c b/keyboards/gmmk/pro/rev2/iso/keymaps/default/keymap.c
index c44e4905d03..9da9bb2490d 100644
--- a/keyboards/gmmk/pro/rev2/iso/keymaps/default/keymap.c
+++ b/keyboards/gmmk/pro/rev2/iso/keymaps/default/keymap.c
@@ -60,13 +60,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 // clang-format on
 
-#ifdef ENCODER_ENABLE
-bool encoder_update_user(uint8_t index, bool clockwise) {
-    if (clockwise) {
-      tap_code(KC_VOLU);
-    } else {
-      tap_code(KC_VOLD);
-    }
-    return false;
-}
+#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) }
+};
 #endif
diff --git a/keyboards/gmmk/pro/rev2/iso/keymaps/default/rules.mk b/keyboards/gmmk/pro/rev2/iso/keymaps/default/rules.mk
new file mode 100644
index 00000000000..a40474b4d5c
--- /dev/null
+++ b/keyboards/gmmk/pro/rev2/iso/keymaps/default/rules.mk
@@ -0,0 +1 @@
+ENCODER_MAP_ENABLE = yes
\ No newline at end of file