diff --git a/src/main/java/it/cavallium/strangedb/database/DatabaseCore.java b/src/main/java/it/cavallium/strangedb/database/DatabaseCore.java
index 904e5f7..3bc274d 100644
--- a/src/main/java/it/cavallium/strangedb/database/DatabaseCore.java
+++ b/src/main/java/it/cavallium/strangedb/database/DatabaseCore.java
@@ -21,7 +21,7 @@ public class DatabaseCore implements IDatabase {
 	public DatabaseCore(Path dataFile, Path referencesMetaFile) throws IOException {
 		this.dataFile = dataFile;
 		this.referencesMetaFile = referencesMetaFile;
-		this.referencesIO = new ConcurrentDatabaseReferencesIO(dataFile, referencesMetaFile, 10, 10);
+		this.referencesIO = new ConcurrentDatabaseReferencesIO(dataFile, referencesMetaFile, 1, 2);
 	}
 
 	@Override