diff --git a/src/core/qgsvectorlayercache.cpp b/src/core/qgsvectorlayercache.cpp
index f99254ba8f2..b62147cec23 100644
--- a/src/core/qgsvectorlayercache.cpp
+++ b/src/core/qgsvectorlayercache.cpp
@@ -22,7 +22,6 @@
 QgsVectorLayerCache::QgsVectorLayerCache( QgsVectorLayer *layer, int cacheSize, QObject *parent )
   : QObject( parent )
   , mLayer( layer )
-  , mFullCache( false )
 {
   mCache.setMaxCost( cacheSize );
 
diff --git a/src/core/qgsvectorlayercache.h b/src/core/qgsvectorlayercache.h
index f8c0625ab7e..96d595c0ee6 100644
--- a/src/core/qgsvectorlayercache.h
+++ b/src/core/qgsvectorlayercache.h
@@ -383,8 +383,8 @@ class CORE_EXPORT QgsVectorLayerCache : public QObject
     QgsVectorLayer *mLayer = nullptr;
     QCache< QgsFeatureId, QgsCachedFeature > mCache;
 
-    bool mCacheGeometry;
-    bool mFullCache;
+    bool mCacheGeometry = true;
+    bool mFullCache = false;
     QList<QgsAbstractCacheIndex *> mCacheIndices;
 
     QgsAttributeList mCachedAttributes;