diff --git a/src/core/mac/mac.hpp b/src/core/mac/mac.hpp
index 26c1f8fe7..41ac22b3a 100644
--- a/src/core/mac/mac.hpp
+++ b/src/core/mac/mac.hpp
@@ -73,33 +73,14 @@ class Neighbor;
 
 namespace Mac {
 
-constexpr uint32_t kDataPollTimeout =
-    OPENTHREAD_CONFIG_MAC_DATA_POLL_TIMEOUT; ///< Timeout for receiving Data Frame (in msec).
-constexpr uint32_t kSleepDelay = 300;        ///< Max sleep delay when frame is pending (in msec).
-
 constexpr uint16_t kScanDurationDefault = OPENTHREAD_CONFIG_MAC_SCAN_DURATION; ///< Duration per channel (in msec).
 
-constexpr uint8_t kMaxCsmaBackoffsDirect   = OPENTHREAD_CONFIG_MAC_MAX_CSMA_BACKOFFS_DIRECT;
-constexpr uint8_t kMaxCsmaBackoffsIndirect = OPENTHREAD_CONFIG_MAC_MAX_CSMA_BACKOFFS_INDIRECT;
-constexpr uint8_t kMaxCsmaBackoffsCsl      = 0;
-
-constexpr uint8_t kDefaultMaxFrameRetriesDirect   = OPENTHREAD_CONFIG_MAC_DEFAULT_MAX_FRAME_RETRIES_DIRECT;
-constexpr uint8_t kDefaultMaxFrameRetriesIndirect = OPENTHREAD_CONFIG_MAC_DEFAULT_MAX_FRAME_RETRIES_INDIRECT;
-constexpr uint8_t kMaxFrameRetriesCsl             = 0;
-
-constexpr uint8_t kTxNumBcast = OPENTHREAD_CONFIG_MAC_TX_NUM_BCAST; ///< Num of times broadcast frame is tx.
-
 /**
  * Specifies the number of microseconds ahead of time that the MAC layer should deliver a CSL frame to the sub-MAC
  * layer.
  */
 constexpr uint16_t kCslRequestAhead = OPENTHREAD_CONFIG_MAC_CSL_REQUEST_AHEAD_US;
 
-constexpr uint16_t kMinCslIePeriod = OPENTHREAD_CONFIG_MAC_CSL_MIN_PERIOD;
-
-constexpr uint32_t kDefaultWedListenInterval = OPENTHREAD_CONFIG_WED_LISTEN_INTERVAL;
-constexpr uint32_t kDefaultWedListenDuration = OPENTHREAD_CONFIG_WED_LISTEN_DURATION;
-
 /**
  * Defines the function pointer which is called during an Energy Scan when the scan result for a channel is
  * ready or when the scan completes.
@@ -780,6 +761,22 @@ public:
 private:
     static constexpr uint16_t kMaxCcaSampleCount = OPENTHREAD_CONFIG_CCA_FAILURE_RATE_AVERAGING_WINDOW;
 
+    static constexpr uint32_t kDataPollTimeout = OPENTHREAD_CONFIG_MAC_DATA_POLL_TIMEOUT; // in msec.
+    static constexpr uint32_t kSleepDelay      = 300;                                     // in msec.
+
+    static constexpr uint8_t kMaxCsmaBackoffsDirect          = OPENTHREAD_CONFIG_MAC_MAX_CSMA_BACKOFFS_DIRECT;
+    static constexpr uint8_t kMaxCsmaBackoffsIndirect        = OPENTHREAD_CONFIG_MAC_MAX_CSMA_BACKOFFS_INDIRECT;
+    static constexpr uint8_t kMaxCsmaBackoffsCsl             = 0;
+    static constexpr uint8_t kDefaultMaxFrameRetriesDirect   = OPENTHREAD_CONFIG_MAC_DEFAULT_MAX_FRAME_RETRIES_DIRECT;
+    static constexpr uint8_t kDefaultMaxFrameRetriesIndirect = OPENTHREAD_CONFIG_MAC_DEFAULT_MAX_FRAME_RETRIES_INDIRECT;
+    static constexpr uint8_t kMaxFrameRetriesCsl             = 0;
+    static constexpr uint8_t kTxNumBcast                     = OPENTHREAD_CONFIG_MAC_TX_NUM_BCAST;
+
+    static constexpr uint16_t kMinCslIePeriod = OPENTHREAD_CONFIG_MAC_CSL_MIN_PERIOD;
+
+    static constexpr uint32_t kDefaultWedListenInterval = OPENTHREAD_CONFIG_WED_LISTEN_INTERVAL;
+    static constexpr uint32_t kDefaultWedListenDuration = OPENTHREAD_CONFIG_WED_LISTEN_DURATION;
+
     enum Operation : uint8_t
     {
         kOperationIdle = 0,