diff --git a/log4j-core/src/main/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverter.java b/log4j-core/src/main/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverter.java
index 3897721..2357093 100644
--- a/log4j-core/src/main/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverter.java
+++ b/log4j-core/src/main/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverter.java
@@ -64,7 +64,7 @@ public final class ExtendedThrowablePatternConverter extends ThrowablePatternCon
             proxy = ((Log4jLogEvent) event).getThrownProxy();
         }
         final Throwable throwable = event.getThrown();
-        if (throwable != null && options.anyLines()) {
+        if ((throwable != null || proxy != null) && options.anyLines()) {
             if (proxy == null) {
                 super.format(event, toAppendTo);
                 return;
diff --git a/log4j-core/src/test/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverterTest.java b/log4j-core/src/test/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverterTest.java
index 9edc98a..703a5b6 100644
--- a/log4j-core/src/test/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverterTest.java
+++ b/log4j-core/src/test/java/org/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverterTest.java
@@ -22,6 +22,7 @@ import java.io.StringWriter;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.core.LogEvent;
 import org.apache.logging.log4j.core.impl.Log4jLogEvent;
+import org.apache.logging.log4j.core.impl.ThrowableProxy;
 import org.apache.logging.log4j.message.SimpleMessage;
 import org.apache.logging.log4j.util.Strings;
 import org.junit.Test;
@@ -65,4 +66,21 @@ public class ExtendedThrowablePatternConverterTest {
         final String result = sb.toString();
         assertTrue("No suppressed lines", result.contains(" suppressed "));
     }
+
+    @Test
+    public void testDeserializedLogEventWithThrowableProxyButNoThrowable() {
+        final ExtendedThrowablePatternConverter converter = ExtendedThrowablePatternConverter.newInstance(null);
+        final Throwable originalThrowable = new Exception("something bad happened");
+        final ThrowableProxy throwableProxy = new ThrowableProxy(originalThrowable);
+        final Throwable deserializedThrowable = null;
+        final LogEvent event = Log4jLogEvent.createEvent(
+                "testLogger", null, this.getClass().getName(), Level.DEBUG,
+                new SimpleMessage(""), deserializedThrowable, throwableProxy,
+                null, null, null, null, 0);
+        final StringBuilder sb = new StringBuilder();
+        converter.format(event, sb);
+        String result = sb.toString();
+        assertTrue(result.contains(originalThrowable.getMessage()));
+        assertTrue(result.contains(originalThrowable.getStackTrace()[0].getMethodName()));
+    }
 }