diff --git a/index/store/boltdb/store.go b/index/store/boltdb/store.go
index 163a0566..5587aafe 100644
--- a/index/store/boltdb/store.go
+++ b/index/store/boltdb/store.go
@@ -33,11 +33,12 @@ const (
 )
 
 type Store struct {
-	path   string
-	bucket string
-	db     *bolt.DB
-	noSync bool
-	mo     store.MergeOperator
+	path        string
+	bucket      string
+	db          *bolt.DB
+	noSync      bool
+	fillPercent float64
+	mo          store.MergeOperator
 }
 
 func New(mo store.MergeOperator, config map[string]interface{}) (store.KVStore, error) {
@@ -53,6 +54,11 @@ func New(mo store.MergeOperator, config map[string]interface{}) (store.KVStore,
 
 	noSync, _ := config["nosync"].(bool)
 
+	fillPercent, ok := config["fillPercent"].(float64)
+	if !ok {
+		fillPercent = bolt.DefaultFillPercent
+	}
+
 	db, err := bolt.Open(path, 0600, nil)
 	if err != nil {
 		return nil, err
@@ -69,11 +75,12 @@ func New(mo store.MergeOperator, config map[string]interface{}) (store.KVStore,
 	}
 
 	rv := Store{
-		path:   path,
-		bucket: bucket,
-		db:     db,
-		mo:     mo,
-		noSync: noSync,
+		path:        path,
+		bucket:      bucket,
+		db:          db,
+		mo:          mo,
+		noSync:      noSync,
+		fillPercent: fillPercent,
 	}
 	return &rv, nil
 }
diff --git a/index/store/boltdb/store_test.go b/index/store/boltdb/store_test.go
index f0dc9da2..975f4076 100644
--- a/index/store/boltdb/store_test.go
+++ b/index/store/boltdb/store_test.go
@@ -15,6 +15,7 @@ import (
 
 	"github.com/blevesearch/bleve/index/store"
 	"github.com/blevesearch/bleve/index/store/test"
+	"github.com/boltdb/bolt"
 )
 
 func open(t *testing.T, mo store.MergeOperator) store.KVStore {
@@ -89,3 +90,52 @@ func TestBoltDBMerge(t *testing.T) {
 	defer cleanup(t, s)
 	test.CommonTestMerge(t, s)
 }
+
+func TestBoltDBConfig(t *testing.T) {
+	var tests = []struct {
+		in          map[string]interface{}
+		path        string
+		bucket      string
+		noSync      bool
+		fillPercent float64
+	}{
+		{
+			map[string]interface{}{"path": "test", "bucket": "mybucket", "nosync": true, "fillPercent": 0.75},
+			"test",
+			"mybucket",
+			true,
+			0.75,
+		},
+		{
+			map[string]interface{}{"path": "test"},
+			"test",
+			"bleve",
+			false,
+			bolt.DefaultFillPercent,
+		},
+	}
+
+	for _, test := range tests {
+		kv, err := New(nil, test.in)
+		if err != nil {
+			t.Fatal(err)
+		}
+		bs, ok := kv.(*Store)
+		if !ok {
+			t.Fatal("failed type assertion to *boltdb.Store")
+		}
+		if bs.path != test.path {
+			t.Fatalf("path: expected %q, got %q", test.path, bs.path)
+		}
+		if bs.bucket != test.bucket {
+			t.Fatalf("bucket: expected %q, got %q", test.bucket, bs.bucket)
+		}
+		if bs.noSync != test.noSync {
+			t.Fatalf("noSync: expected %t, got %t", test.noSync, bs.noSync)
+		}
+		if bs.fillPercent != test.fillPercent {
+			t.Fatalf("fillPercent: expected %f, got %f", test.fillPercent, bs.fillPercent)
+		}
+		cleanup(t, kv)
+	}
+}
diff --git a/index/store/boltdb/writer.go b/index/store/boltdb/writer.go
index 4ba1d082..a758efa6 100644
--- a/index/store/boltdb/writer.go
+++ b/index/store/boltdb/writer.go
@@ -40,6 +40,7 @@ func (w *Writer) ExecuteBatch(batch store.KVBatch) error {
 	}
 
 	bucket := tx.Bucket([]byte(w.store.bucket))
+	bucket.FillPercent = w.store.fillPercent
 
 	for k, mergeOps := range emulatedBatch.Merger.Merges {
 		kb := []byte(k)