diff --git a/src/core/radio/radio.cpp b/src/core/radio/radio.cpp
index ef1860f71..f86f89451 100644
--- a/src/core/radio/radio.cpp
+++ b/src/core/radio/radio.cpp
@@ -104,6 +104,15 @@ Error Radio::AddSrcMatchExtEntry(const Mac::ExtAddress &aExtAddress)
     address.Set(aExtAddress.m8, Mac::ExtAddress::kReverseByteOrder);
     return otPlatRadioAddSrcMatchExtEntry(GetInstancePtr(), &address);
 }
+
+Error Radio::ClearSrcMatchExtEntry(const Mac::ExtAddress &aExtAddress)
+{
+    Mac::ExtAddress address;
+
+    address.Set(aExtAddress.m8, Mac::ExtAddress::kReverseByteOrder);
+    return otPlatRadioClearSrcMatchExtEntry(GetInstancePtr(), &address);
+}
+
 Error Radio::Transmit(Mac::TxFrame &aFrame)
 {
 #if (OPENTHREAD_MTD || OPENTHREAD_FTD) && OPENTHREAD_CONFIG_OTNS_ENABLE
diff --git a/src/core/radio/radio.hpp b/src/core/radio/radio.hpp
index 639171084..321ac4b12 100644
--- a/src/core/radio/radio.hpp
+++ b/src/core/radio/radio.hpp
@@ -1021,11 +1021,6 @@ inline Error Radio::ClearSrcMatchShortEntry(Mac::ShortAddress aShortAddress)
     return otPlatRadioClearSrcMatchShortEntry(GetInstancePtr(), aShortAddress);
 }
 
-inline Error Radio::ClearSrcMatchExtEntry(const Mac::ExtAddress &aExtAddress)
-{
-    return otPlatRadioClearSrcMatchExtEntry(GetInstancePtr(), &aExtAddress);
-}
-
 inline void Radio::ClearSrcMatchShortEntries(void) { otPlatRadioClearSrcMatchShortEntries(GetInstancePtr()); }
 
 inline void Radio::ClearSrcMatchExtEntries(void) { otPlatRadioClearSrcMatchExtEntries(GetInstancePtr()); }