diff --git a/src/main/java/com/googlesource/gerrit/plugins/uploadvalidator/BlockedKeywordValidator.java b/src/main/java/com/googlesource/gerrit/plugins/uploadvalidator/BlockedKeywordValidator.java
index 7e6b9d6..737796b 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/uploadvalidator/BlockedKeywordValidator.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/uploadvalidator/BlockedKeywordValidator.java
@@ -174,6 +174,7 @@
                   receiveEvent.revWalk,
                   blockedKeywordPatterns.values(),
                   cfg);
+
           if (!messages.isEmpty()) {
             throw new CommitValidationException(
                 "includes files containing blocked keywords", messages);
@@ -184,6 +185,7 @@
         | IOException
         | ExecutionException
         | DiffNotAvailableException e) {
+      logger.atWarning().withCause(e).log("blocked keywords commit validation failed");
       throw new CommitValidationException("failed to check on blocked keywords", e);
     }
     return Collections.emptyList();