diff --git a/core/blockchain.go b/core/blockchain.go
index c9b80bc2fffb..c1d15350fd2f 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -2492,8 +2492,3 @@ func (bc *BlockChain) SetBlockValidatorAndProcessorForTesting(v Validator, p Pro
 func (bc *BlockChain) SetTrieFlushInterval(interval time.Duration) {
 	bc.flushInterval.Store(int64(interval))
 }
-
-// GetTrieFlushInterval gets the in-memroy tries flush interval
-func (bc *BlockChain) GetTrieFlushInterval() time.Duration {
-	return time.Duration(bc.flushInterval.Load())
-}
diff --git a/eth/api_debug.go b/eth/api_debug.go
index 4dd48508f681..7cf0239174fc 100644
--- a/eth/api_debug.go
+++ b/eth/api_debug.go
@@ -406,8 +406,6 @@ func (api *DebugAPI) GetAccessibleState(from, to rpc.BlockNumber) (uint64, error
 
 // SetTrieFlushInterval configures how often in-memory tries are persisted
 // to disk. The value is in terms of block processing time, not wall clock.
-// If the value is shorter than the block generation time, or even 0 or negative,
-// the node will flush trie after processing each block (effectively archive mode).
 func (api *DebugAPI) SetTrieFlushInterval(interval string) error {
 	t, err := time.ParseDuration(interval)
 	if err != nil {
@@ -416,8 +414,3 @@ func (api *DebugAPI) SetTrieFlushInterval(interval string) error {
 	api.eth.blockchain.SetTrieFlushInterval(t)
 	return nil
 }
-
-// GetTrieFlushInterval gets the current value of in-memory trie flush interval
-func (api *DebugAPI) GetTrieFlushInterval() string {
-	return api.eth.blockchain.GetTrieFlushInterval().String()
-}
diff --git a/internal/web3ext/web3ext.go b/internal/web3ext/web3ext.go
index c171709586e6..ea4abef1f6f8 100644
--- a/internal/web3ext/web3ext.go
+++ b/internal/web3ext/web3ext.go
@@ -495,11 +495,6 @@ web3._extend({
 			call: 'debug_setTrieFlushInterval',
 			params: 1
 		}),
-		new web3._extend.Method({
-			name: 'getTrieFlushInterval',
-			call: 'debug_getTrieFlushInterval',
-			params: 0
-		}),
 	],
 	properties: []
 });