diff --git a/internal/rdb/structure/module2_struct.go b/internal/rdb/structure/module2_struct.go
index c456074b..ab73fa62 100644
--- a/internal/rdb/structure/module2_struct.go
+++ b/internal/rdb/structure/module2_struct.go
@@ -50,7 +50,7 @@ func ReadModuleDouble(rd io.Reader) string {
 		log.Panicf("Unknown module double encode type")
 	}
 	value := ReadDouble(rd)
-	return fmt.Sprintf("%f", value)
+	return fmt.Sprintf("%.15f", value)
 }
 
 func ReadModuleString(rd io.Reader) string {