diff --git a/src/core/thread/address_resolver.cpp b/src/core/thread/address_resolver.cpp
index 627878e37..11e2adc86 100644
--- a/src/core/thread/address_resolver.cpp
+++ b/src/core/thread/address_resolver.cpp
@@ -167,7 +167,7 @@ void AddressResolver::MarkCacheEntryAsUsed(Cache &aEntry)
     aEntry.mAge = 0;
 }
 
-const char *AddressResolver::ConvertInvalidationReasonToString(InvalidationReason aReason)
+const char *AddressResolver::InvalidationReasonToString(InvalidationReason aReason)
 {
     const char *str = "";
 
@@ -213,13 +213,13 @@ void AddressResolver::InvalidateCacheEntry(Cache &aEntry, InvalidationReason aRe
     {
     case Cache::kStateCached:
         otLogNoteArp("Cache entry removed: %s, 0x%04x - %s", aEntry.mTarget.ToString().AsCString(), aEntry.mRloc16,
-                     ConvertInvalidationReasonToString(aReason));
+                     InvalidationReasonToString(aReason));
         break;
 
     case Cache::kStateQuery:
         otLogNoteArp("Cache entry (query mode) removed: %s, timeout:%d, retry:%d - %s",
                      aEntry.mTarget.ToString().AsCString(), aEntry.mTimeout, aEntry.mRetryTimeout,
-                     ConvertInvalidationReasonToString(aReason));
+                     InvalidationReasonToString(aReason));
         break;
 
     default:
diff --git a/src/core/thread/address_resolver.hpp b/src/core/thread/address_resolver.hpp
index 6c5ae5773..0c3b5bf0d 100644
--- a/src/core/thread/address_resolver.hpp
+++ b/src/core/thread/address_resolver.hpp
@@ -208,7 +208,7 @@ private:
         kReasonRemovingEid,
     };
 
-    static const char *ConvertInvalidationReasonToString(InvalidationReason aReason);
+    static const char *InvalidationReasonToString(InvalidationReason aReason);
 
     Cache *NewCacheEntry(void);
     void   MarkCacheEntryAsUsed(Cache &aEntry);