diff --git a/features/FEATURE_BLE/ble/Gap.h b/features/FEATURE_BLE/ble/Gap.h
index f2392305e3..22c815fbbd 100644
--- a/features/FEATURE_BLE/ble/Gap.h
+++ b/features/FEATURE_BLE/ble/Gap.h
@@ -1944,7 +1944,7 @@ public:
      * @return BLE_ERROR_NONE on success.
      */
     virtual ble_error_t startScan(
-        ble::scanning_filter_duplicates_t filtering = ble::SCAN_FILTER_DUPLICATES_DISABLED,
+        ble::duplicates_filter_t filtering = ble::duplicates_filter_t::DISABLE,
         ble::scan_duration_t duration = ble::scan_duration_t(0),
         ble::scan_period_t period = ble::scan_period_t(0)
     ) {
diff --git a/features/FEATURE_BLE/ble/gap/Types.h b/features/FEATURE_BLE/ble/gap/Types.h
index cdae5e8e6e..96268f8d27 100644
--- a/features/FEATURE_BLE/ble/gap/Types.h
+++ b/features/FEATURE_BLE/ble/gap/Types.h
@@ -347,17 +347,33 @@ struct initiator_filter_policy_t : SafeEnum<initiator_filter_policy_t, uint8_t>
     initiator_filter_policy_t(type value) : SafeEnum(value) { }
 };
 
-
 /**
  * Scanning policy filter mode.
  *
  * @see Bluetooth Core Specification 4.2 (Vol. 6), Part B, Section 4.3.3.
  */
-enum scanning_filter_duplicates_t {
-    SCAN_FILTER_DUPLICATES_DISABLED = 0, /**< Do not remove duplicate reports. */
-    SCAN_FILTER_DUPLICATES_ENABLED = 1, /**< Remove duplicate reports. */
-    SCAN_FILTER_DUPLICATES_ENABLED_PER_PERIOD = 2 /**< Remove reports which are duplicate
-                                                       within a single period. */
+struct duplicates_filter_t :  SafeEnum<duplicates_filter_t, uint8_t >{
+    enum type {
+        /**
+         * Disable duplicate filtering.
+         */
+        DISABLE,
+
+        /**
+         * Enable duplicate filtering.
+         */
+        ENABLE,
+
+        /**
+         * Enable duplicate filtering, reset the cache periodically.
+         */
+        PERIODIC_RESET
+    };
+
+    /**
+     * Construct a new duplicates_filter_t value.
+     */
+    duplicates_filter_t(type value) : SafeEnum(value) { }
 };
 
 struct own_address_type_t : ble::SafeEnum<own_address_type_t, uint8_t> {
diff --git a/features/FEATURE_BLE/ble/generic/GenericGap.h b/features/FEATURE_BLE/ble/generic/GenericGap.h
index 9e36a2b8c5..02badf5017 100644
--- a/features/FEATURE_BLE/ble/generic/GenericGap.h
+++ b/features/FEATURE_BLE/ble/generic/GenericGap.h
@@ -175,7 +175,7 @@ public:
     /** @copydoc Gap::startScan
      */
     virtual ble_error_t startScan(
-        scanning_filter_duplicates_t filtering,
+        duplicates_filter_t filtering,
         scan_duration_t duration,
         scan_period_t period
     );
diff --git a/features/FEATURE_BLE/ble/pal/GapTypes.h b/features/FEATURE_BLE/ble/pal/GapTypes.h
index 90d8fbb0dd..8755ba7d9e 100644
--- a/features/FEATURE_BLE/ble/pal/GapTypes.h
+++ b/features/FEATURE_BLE/ble/pal/GapTypes.h
@@ -644,30 +644,7 @@ struct advertising_fragment_description_t :
         SafeEnum<advertising_fragment_description_t, uint8_t>(value) { }
 };
 
-struct duplicates_filter_t :  SafeEnum<duplicates_filter_t, uint8_t >{
-    enum type {
-        /**
-         * Disable duplicate filtering.
-         */
-        DISABLE,
-
-        /**
-         * Enable duplicate filtering.
-         */
-        ENABLE,
-
-        /**
-         * Enable duplicate filtering, reset the cache periodically.
-         */
-        PERIODIC_RESET
-    };
-
-    /**
-     * Construct a new duplicates_filter_t value.
-     */
-    duplicates_filter_t(type value) :
-        SafeEnum<duplicates_filter_t, uint8_t>(value) { }
-};
+typedef ble::duplicates_filter_t duplicates_filter_t;
 
 /**
  * Identify a periodic advertising sync.
diff --git a/features/FEATURE_BLE/source/generic/GenericGap.cpp b/features/FEATURE_BLE/source/generic/GenericGap.cpp
index 4f4ee03a1b..7137086346 100644
--- a/features/FEATURE_BLE/source/generic/GenericGap.cpp
+++ b/features/FEATURE_BLE/source/generic/GenericGap.cpp
@@ -2412,7 +2412,7 @@ ble_error_t GenericGap::setScanParameters(const ScanParameters &params)
 }
 
 ble_error_t GenericGap::startScan(
-    scanning_filter_duplicates_t filtering,
+    duplicates_filter_t filtering,
     scan_duration_t duration,
     scan_period_t period
 )
@@ -2427,7 +2427,7 @@ ble_error_t GenericGap::startScan(
     if (is_extended_advertising_available()) {
         return _pal_gap.extended_scan_enable(
             /* enable */true,
-            (pal::duplicates_filter_t::type) filtering,
+            filtering,
             duration.value(),
             period.value()
         );
@@ -2438,7 +2438,7 @@ ble_error_t GenericGap::startScan(
 
         ble_error_t err = _pal_gap.scan_enable(
             true,
-            filtering == SCAN_FILTER_DUPLICATES_DISABLED ? false : true
+            filtering == duplicates_filter_t::DISABLE ? false : true
         );
 
         if (err) {