diff --git a/native/jni/src/dictionary.cpp b/native/jni/src/dictionary.cpp
index 75d566cc7..9e4bd15a9 100644
--- a/native/jni/src/dictionary.cpp
+++ b/native/jni/src/dictionary.cpp
@@ -47,8 +47,6 @@ Dictionary::Dictionary(void *dict, int dictSize, int mmapFd, int dictBufAdjust,
             fullWordMultiplier, maxWordLength, maxWords, options);
     mBigramDictionary = new BigramDictionary(mOffsetDict, maxWordLength, maxPredictions);
     mGestureDecoder = new GestureDecoderWrapper(maxWordLength, maxWords);
-    mGestureDecoder->setDict(mUnigramDictionary, mBigramDictionary,
-            mOffsetDict /* dict root */, 0 /* root pos */);
 }
 
 Dictionary::~Dictionary() {
diff --git a/native/jni/src/gesture/gesture_decoder_wrapper.h b/native/jni/src/gesture/gesture_decoder_wrapper.h
index 4a26d9c1b..f8bfe7c79 100644
--- a/native/jni/src/gesture/gesture_decoder_wrapper.h
+++ b/native/jni/src/gesture/gesture_decoder_wrapper.h
@@ -48,14 +48,6 @@ class GestureDecoderWrapper : public IncrementalDecoderInterface {
                 inputSize, commitPoint, outWords, frequencies, outputIndices, outputTypes);
     }
 
-    void setDict(const UnigramDictionary *dict, const BigramDictionary *bigram,
-            const uint8_t *dictRoot, int rootPos) {
-        if (!mIncrementalDecoderInterface) {
-            return;
-        }
-        mIncrementalDecoderInterface->setDict(dict, bigram, dictRoot, rootPos);
-    }
-
     static void setGestureDecoderFactoryMethod(
             IncrementalDecoderInterface *(*factoryMethod)(int, int)) {
         sGestureDecoderFactoryMethod = factoryMethod;
diff --git a/native/jni/src/gesture/incremental_decoder_interface.h b/native/jni/src/gesture/incremental_decoder_interface.h
index e940344d4..04f0095e0 100644
--- a/native/jni/src/gesture/incremental_decoder_interface.h
+++ b/native/jni/src/gesture/incremental_decoder_interface.h
@@ -32,8 +32,6 @@ class IncrementalDecoderInterface {
             int *inputXs, int *inputYs, int *times, int *pointerIds, int *codes,
             int inputSize, int commitPoint, unsigned short *outWords, int *frequencies,
             int *outputIndices, int *outputTypes) = 0;
-    virtual void setDict(const UnigramDictionary *dict, const BigramDictionary *bigram,
-            const uint8_t *dictRoot, int rootPos) = 0;
     IncrementalDecoderInterface() { };
     virtual ~IncrementalDecoderInterface() { };
  private:
diff --git a/native/jni/src/gesture/incremental_decoder_wrapper.h b/native/jni/src/gesture/incremental_decoder_wrapper.h
index f47d539b7..5cb2ee368 100644
--- a/native/jni/src/gesture/incremental_decoder_wrapper.h
+++ b/native/jni/src/gesture/incremental_decoder_wrapper.h
@@ -48,14 +48,6 @@ class IncrementalDecoderWrapper : public IncrementalDecoderInterface {
                 inputSize, commitPoint, outWords, frequencies, outputIndices, outputTypes);
     }
 
-    void setDict(const UnigramDictionary *dict, const BigramDictionary *bigram,
-            const uint8_t *dictRoot, int rootPos) {
-        if (!mIncrementalDecoderInterface) {
-            return;
-        }
-        mIncrementalDecoderInterface->setDict(dict, bigram, dictRoot, rootPos);
-    }
-
     static void setIncrementalDecoderFactoryMethod(
             IncrementalDecoderInterface *(*factoryMethod)(int, int)) {
         sIncrementalDecoderFactoryMethod = factoryMethod;