diff --git a/server/src/main/java/org/apache/druid/server/QueryLifecycle.java b/server/src/main/java/org/apache/druid/server/QueryLifecycle.java
index 8f0deafac2b..0f46e5da4d9 100644
--- a/server/src/main/java/org/apache/druid/server/QueryLifecycle.java
+++ b/server/src/main/java/org/apache/druid/server/QueryLifecycle.java
@@ -347,7 +347,7 @@ public class QueryLifecycle
 
       if (e != null) {
         statsMap.put("exception", e.toString());
-        if (baseQuery.context().isDebug()) {
+        if (baseQuery.context().isDebug() || e.getMessage() == null) {
           log.warn(e, "Exception while processing queryId [%s]", baseQuery.getId());
         } else {
           log.noStackTrace().warn(e, "Exception while processing queryId [%s]", baseQuery.getId());