diff --git a/java/src/com/android/inputmethod/research/LogBuffer.java b/java/src/com/android/inputmethod/research/LogBuffer.java
index ae7b157..a3c3e89 100644
--- a/java/src/com/android/inputmethod/research/LogBuffer.java
+++ b/java/src/com/android/inputmethod/research/LogBuffer.java
@@ -110,4 +110,8 @@
         }
         return logUnit;
     }
+
+    public boolean isEmpty() {
+        return mLogUnits.isEmpty();
+    }
 }
diff --git a/java/src/com/android/inputmethod/research/ResearchLogger.java b/java/src/com/android/inputmethod/research/ResearchLogger.java
index 035e7e0..d7ac011 100644
--- a/java/src/com/android/inputmethod/research/ResearchLogger.java
+++ b/java/src/com/android/inputmethod/research/ResearchLogger.java
@@ -378,7 +378,6 @@
         if (DEBUG) {
             Log.d(TAG, "stop called");
         }
-        logStatistics();
         commitCurrentLogUnit();
 
         if (mMainLogBuffer != null) {
@@ -706,6 +705,7 @@
     /* package for test */ void publishLogBuffer(final LogBuffer logBuffer,
             final ResearchLog researchLog, final boolean isIncludingPrivateData) {
         final LogUnit openingLogUnit = new LogUnit();
+        if (logBuffer.isEmpty()) return;
         openingLogUnit.addLogStatement(LOGSTATEMENT_LOG_SEGMENT_OPENING, SystemClock.uptimeMillis(),
                 isIncludingPrivateData);
         researchLog.publish(openingLogUnit, true /* isIncludingPrivateData */);
@@ -855,6 +855,7 @@
     }
 
     public void latinIME_onFinishInputViewInternal() {
+        logStatistics();
         stop();
     }