diff --git a/src/com/android/services/telephony/PstnIncomingCallNotifier.java b/src/com/android/services/telephony/PstnIncomingCallNotifier.java
index 47fac6a..8596e3e 100644
--- a/src/com/android/services/telephony/PstnIncomingCallNotifier.java
+++ b/src/com/android/services/telephony/PstnIncomingCallNotifier.java
@@ -149,7 +149,7 @@
             Connection connection = call.getLatestConnection();
             if (connection != null) {
                 String number = connection.getAddress();
-                if (number != null && Objects.equals(number, ccwi.number)) {
+                if (!TextUtils.isEmpty(number) && Objects.equals(number, ccwi.number)) {
                     sendIncomingCallIntent(connection);
                 }
             }