diff --git a/src/database/sql/sql_test.go b/src/database/sql/sql_test.go
index 1c25e79..fee2fe8 100644
--- a/src/database/sql/sql_test.go
+++ b/src/database/sql/sql_test.go
@@ -316,7 +316,7 @@
 	select {
 	case <-ctx.Done():
 		if err := ctx.Err(); err != context.Canceled {
-			t.Fatalf("context err = %v; want context.Canceled")
+			t.Fatalf("context err = %v; want context.Canceled", err)
 		}
 	default:
 		t.Fatalf("context err = nil; want context.Canceled")
@@ -365,7 +365,8 @@
 	defer closeDB(t, db)
 	prepares0 := numPrepares(t, db)
 
-	ctx, _ := context.WithTimeout(context.Background(), time.Millisecond*15)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*15)
+	defer cancel()
 
 	// This will trigger the *fakeConn.Prepare method which will take time
 	// performing the query. The ctxDriverPrepare func will check the context
@@ -386,7 +387,8 @@
 	db := newTestDB(t, "people")
 	defer closeDB(t, db)
 
-	ctx, _ := context.WithTimeout(context.Background(), time.Millisecond*15)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*15)
+	defer cancel()
 
 	tx, err := db.BeginTx(ctx, nil)
 	if err != nil {