Handler map doesn't need to be mutable.

1 files changed, 1 insertions, 1 deletions

diff --git a/searchcore/src/vespa/searchcore/proton/persistenceengine/persistenceengine.h b/searchcore/src/vespa/searchcore/proton/persistenceengine/persistenceengine.h
index dec336b05e4..b2abc7911d7 100644
--- a/searchcore/src/vespa/searchcore/proton/persistenceengine/persistenceengine.h
+++ b/searchcore/src/vespa/searchcore/proton/persistenceengine/persistenceengine.h
@@ -70,7 +70,7 @@ private:
 
     const ssize_t                           _defaultSerializedSize;
     const bool                              _ignoreMaxBytes;
-    mutable PersistenceHandlerMap           _handlers;
+    PersistenceHandlerMap                   _handlers;
     vespalib::Lock                          _lock;
     Iterators                               _iterators;
     vespalib::Lock                          _iterators_lock;