diff --git a/core/java/com/android/internal/inputmethod/InputMethodDebug.java b/core/java/com/android/internal/inputmethod/InputMethodDebug.java
index 3bcba75ec1632..c353de88dc3b3 100644
--- a/core/java/com/android/internal/inputmethod/InputMethodDebug.java
+++ b/core/java/com/android/internal/inputmethod/InputMethodDebug.java
@@ -226,6 +226,8 @@ public final class InputMethodDebug {
                 return "HIDE_RECENTS_ANIMATION";
             case SoftInputShowHideReason.HIDE_SAME_WINDOW_FOCUSED_WITHOUT_EDITOR:
                 return "HIDE_SAME_WINDOW_FOCUSED_WITHOUT_EDITOR";
+            case SoftInputShowHideReason.HIDE_REMOVE_CLIENT:
+                return "HIDE_REMOVE_CLIENT";
             default:
                 return "Unknown=" + reason;
         }
diff --git a/core/tests/coretests/src/com/android/internal/inputmethod/InputMethodDebugTest.java b/core/tests/coretests/src/com/android/internal/inputmethod/InputMethodDebugTest.java
index 222e494de7d40..32bfdcb7b2174 100644
--- a/core/tests/coretests/src/com/android/internal/inputmethod/InputMethodDebugTest.java
+++ b/core/tests/coretests/src/com/android/internal/inputmethod/InputMethodDebugTest.java
@@ -65,4 +65,12 @@ public class InputMethodDebugTest {
                 InputMethodDebug.startInputFlagsToString(
                         StartInputFlags.VIEW_HAS_FOCUS | StartInputFlags.INITIAL_CONNECTION));
     }
+
+    @Test
+    public void testSoftInputDisplayReasonToString() {
+        // TODO: add more tests
+        assertEquals("HIDE_REMOVE_CLIENT",
+                InputMethodDebug.softInputDisplayReasonToString(
+                        SoftInputShowHideReason.HIDE_REMOVE_CLIENT));
+    }
 }