diff --git a/db.go b/db.go
index fd3e85ace..2234843f2 100644
--- a/db.go
+++ b/db.go
@@ -218,6 +218,8 @@ func Open(opt Options) (db *DB, err error) {
 	if opt.Compression == options.ZSTD && !y.CgoEnabled {
 		return nil, y.ErrZstdCgo
 	}
+	// Keep L0 in memory if either KeepL0InMemory is set or if InMemory is set.
+	opt.KeepL0InMemory = opt.KeepL0InMemory || opt.InMemory
 
 	// Compact L0 on close if either it is set or if KeepL0InMemory is set. When
 	// keepL0InMemory is set we need to compact L0 on close otherwise we might lose data.