diff --git a/java/com/google/gerrit/gpg/server/PostGpgKeys.java b/java/com/google/gerrit/gpg/server/PostGpgKeys.java
index e487a54..4b92ec3 100644
--- a/java/com/google/gerrit/gpg/server/PostGpgKeys.java
+++ b/java/com/google/gerrit/gpg/server/PostGpgKeys.java
@@ -259,10 +259,10 @@
 
     if (accountStates.size() > 1) {
       StringBuilder msg = new StringBuilder();
-      msg.append("GPG key ").append(extIdKey.get()).append(" associated with multiple accounts: ");
-      Joiner.on(", ")
-          .appendTo(msg, Lists.transform(accountStates, AccountState.ACCOUNT_ID_FUNCTION));
-      log.error(msg.toString());
+      msg.append("GPG key ")
+          .append(extIdKey.get())
+          .append(" associated with multiple accounts: ")
+          .append(Lists.transform(accountStates, AccountState.ACCOUNT_ID_FUNCTION));
       throw new IllegalStateException(msg.toString());
     }
 
diff --git a/java/com/google/gerrit/pgm/http/jetty/JettyServer.java b/java/com/google/gerrit/pgm/http/jetty/JettyServer.java
index b6eac05..25a28a4 100644
--- a/java/com/google/gerrit/pgm/http/jetty/JettyServer.java
+++ b/java/com/google/gerrit/pgm/http/jetty/JettyServer.java
@@ -69,13 +69,9 @@
 import org.eclipse.jetty.util.thread.QueuedThreadPool;
 import org.eclipse.jetty.util.thread.ThreadPool;
 import org.eclipse.jgit.lib.Config;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 @Singleton
 public class JettyServer {
-  private static final Logger log = LoggerFactory.getLogger(JettyServer.class);
-
   static class Lifecycle implements LifecycleListener {
     private final JettyServer server;
     private final Config cfg;
@@ -425,9 +421,8 @@
             "/*",
             EnumSet.of(DispatcherType.REQUEST, DispatcherType.ASYNC));
       } catch (Throwable e) {
-        String errorMessage = "Unable to instantiate front-end HTTP Filter " + filterClassName;
-        log.error(errorMessage, e);
-        throw new IllegalArgumentException(errorMessage, e);
+        throw new IllegalArgumentException(
+            "Unable to instantiate front-end HTTP Filter " + filterClassName, e);
       }
     }