diff --git a/src/db/result_set.cr b/src/db/result_set.cr
index 37ddaca..3bb4aa6 100644
--- a/src/db/result_set.cr
+++ b/src/db/result_set.cr
@@ -18,7 +18,7 @@ module DB
     # :nodoc:
     getter statement
 
-    def initialize(@statement : Statement)
+    def initialize(@statement : DB::Statement)
     end
 
     protected def do_close