diff --git a/pebble.go b/pebble.go
index ca55d00..18c4cec 100644
--- a/pebble.go
+++ b/pebble.go
@@ -114,7 +114,7 @@ func (db *PebbleDB) Delete(key []byte) error {
 }
 
 // DeleteSync implements DB.
-func (db PebbleDB) DeleteSync(key []byte) error {
+func (db *PebbleDB) DeleteSync(key []byte) error {
 	if len(key) == 0 {
 		return errKeyEmpty
 	}
@@ -153,7 +153,7 @@ func (db *PebbleDB) Compact(start, end []byte) (err error) {
 }
 
 // Close implements DB.
-func (db PebbleDB) Close() error {
+func (db *PebbleDB) Close() error {
 	db.db.Close()
 	return nil
 }
@@ -400,7 +400,7 @@ func (itr *pebbleDBIterator) Value() []byte {
 }
 
 // Next implements Iterator.
-func (itr pebbleDBIterator) Next() {
+func (itr *pebbleDBIterator) Next() {
 	itr.assertIsValid()
 	if itr.isReverse {
 		itr.source.Prev()
diff --git a/tools/Dockerfile b/tools/Dockerfile
index 110999f..74b00cb 100644
--- a/tools/Dockerfile
+++ b/tools/Dockerfile
@@ -13,7 +13,7 @@ RUN \
   wget -q https://github.com/facebook/rocksdb/archive/refs/tags/v${ROCKSDB}.tar.gz \
   && tar -zxf v${ROCKSDB}.tar.gz \
   && cd rocksdb-${ROCKSDB} \
-  && DEBUG_LEVEL=0 make -j4 shared_lib \
+  && DEBUG_LEVEL=0 CXXFLAGS="-Wno-maybe-uninitialized" make -j4 shared_lib \
   && make install-shared \
   && ldconfig \
   && cd .. \