diff --git a/app/src/main/java/com/rxjava2/android/samples/ui/search/SearchActivity.kt b/app/src/main/java/com/rxjava2/android/samples/ui/search/SearchActivity.kt
index 95756bb..4f42b78 100644
--- a/app/src/main/java/com/rxjava2/android/samples/ui/search/SearchActivity.kt
+++ b/app/src/main/java/com/rxjava2/android/samples/ui/search/SearchActivity.kt
@@ -38,7 +38,7 @@ class SearchActivity : AppCompatActivity() {
                 .debounce(300, TimeUnit.MILLISECONDS)
                 .filter { text ->
                     if (text.isEmpty()) {
-                        textViewResult.text = ""
+                        runOnUiThread { textViewResult.text = "" }
                         return@filter false
                     } else {
                         return@filter true