diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index 79a05ceae..af494c4f4 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -428,7 +428,7 @@ public final class LatinIME extends InputMethodService implements KeyboardAction
         initSuggest();
 
         if (ProductionFlag.IS_EXPERIMENTAL) {
-            ResearchLogger.getInstance().init(this, mKeyboardSwitcher);
+            ResearchLogger.getInstance().init(this, mKeyboardSwitcher, mSuggest);
         }
         mDisplayOrientation = getResources().getConfiguration().orientation;
 
diff --git a/java/src/com/android/inputmethod/research/MainLogBuffer.java b/java/src/com/android/inputmethod/research/MainLogBuffer.java
index 9e77a1a38..9aa60f859 100644
--- a/java/src/com/android/inputmethod/research/MainLogBuffer.java
+++ b/java/src/com/android/inputmethod/research/MainLogBuffer.java
@@ -67,7 +67,7 @@ public abstract class MainLogBuffer extends FixedLogBuffer {
 
     // TODO: Remove dependence on Suggest, and pass in Dictionary as a parameter to an appropriate
     // method.
-    private Suggest mSuggest;
+    private final Suggest mSuggest;
     @UsedForTesting
     private Dictionary mDictionaryForTesting;
     private boolean mIsStopping = false;
@@ -78,13 +78,11 @@ public abstract class MainLogBuffer extends FixedLogBuffer {
     // after a sample is taken.
     /* package for test */ int mNumWordsUntilSafeToSample;
 
-    public MainLogBuffer(final int wordsBetweenSamples, final int numInitialWordsToIgnore) {
+    public MainLogBuffer(final int wordsBetweenSamples, final int numInitialWordsToIgnore,
+            final Suggest suggest) {
         super(N_GRAM_SIZE + wordsBetweenSamples);
         mNumWordsBetweenNGrams = wordsBetweenSamples;
         mNumWordsUntilSafeToSample = DEBUG ? 0 : numInitialWordsToIgnore;
-    }
-
-    public void setSuggest(final Suggest suggest) {
         mSuggest = suggest;
     }
 
diff --git a/java/src/com/android/inputmethod/research/ResearchLogger.java b/java/src/com/android/inputmethod/research/ResearchLogger.java
index 80e4af28f..1e1cb87b5 100644
--- a/java/src/com/android/inputmethod/research/ResearchLogger.java
+++ b/java/src/com/android/inputmethod/research/ResearchLogger.java
@@ -235,7 +235,8 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         return sInstance;
     }
 
-    public void init(final LatinIME latinIME, final KeyboardSwitcher keyboardSwitcher) {
+    public void init(final LatinIME latinIME, final KeyboardSwitcher keyboardSwitcher,
+            final Suggest suggest) {
         assert latinIME != null;
         if (latinIME == null) {
             Log.w(TAG, "IMS is null; logging is off");
@@ -245,6 +246,7 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
                 Log.w(TAG, "IME storage directory does not exist.");
             }
         }
+        mSuggest = suggest;
         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(latinIME);
         if (prefs != null) {
             if (!prefs.contains(PREF_USABILITY_STUDY_MODE)) {
@@ -479,7 +481,8 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         if (mMainLogBuffer == null) {
             mMainResearchLog = new ResearchLog(createLogFile(mFilesDir), mLatinIME);
             final int numWordsToIgnore = new Random().nextInt(NUMBER_OF_WORDS_BETWEEN_SAMPLES + 1);
-            mMainLogBuffer = new MainLogBuffer(NUMBER_OF_WORDS_BETWEEN_SAMPLES, numWordsToIgnore) {
+            mMainLogBuffer = new MainLogBuffer(NUMBER_OF_WORDS_BETWEEN_SAMPLES, numWordsToIgnore,
+                    mSuggest) {
                 @Override
                 protected void publish(final ArrayList<LogUnit> logUnits,
                         boolean canIncludePrivateData) {
@@ -502,7 +505,6 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
                     }
                 }
             };
-            mMainLogBuffer.setSuggest(mSuggest);
         }
         if (mFeedbackLogBuffer == null) {
             resetFeedbackLogging();
@@ -850,10 +852,13 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         mInFeedbackDialog = false;
     }
 
-    public void initSuggest(Suggest suggest) {
+    public void initSuggest(final Suggest suggest) {
         mSuggest = suggest;
+        // MainLogBuffer has out-of-date Suggest object.  Need to close it down and create a new
+        // one.
         if (mMainLogBuffer != null) {
-            mMainLogBuffer.setSuggest(mSuggest);
+            stop();
+            start();
         }
     }