@@ -298,7 +298,7 @@ func (s *DockerSuite) TestBuildOnBuildCache(c *check.C) {

 		out, err := request.ReadBody(body)

 		assert.NilError(c, err)

-		assert.Check(c, is.Contains(string(out), "Successfully built"))

+		assert.Assert(c, is.Contains(string(out), "Successfully built"))

 		return out

 	}

@@ -313,7 +313,7 @@ func (s *DockerSuite) TestBuildOnBuildCache(c *check.C) {

 	out := build(dockerfile)

 	imageIDs := getImageIDsFromBuild(c, out)

-	assert.Check(c, is.Len(imageIDs, 2))

+	assert.Assert(c, is.Len(imageIDs, 2))

 	parentID, childID := imageIDs[0], imageIDs[1]

 	client := testEnv.APIClient()

@@ -457,8 +457,10 @@ COPY file /file`

 		out, err := request.ReadBody(body)

 		assert.NilError(c, err)

+		assert.Assert(c, is.Contains(string(out), "Successfully built"))

 		ids := getImageIDsFromBuild(c, out)

+		assert.Assert(c, is.Len(ids, 1))

 		return ids[len(ids)-1]

 	}

@@ -496,8 +498,10 @@ ADD file /file`

 		out, err := request.ReadBody(body)

 		assert.NilError(c, err)

+		assert.Assert(c, is.Contains(string(out), "Successfully built"))

 		ids := getImageIDsFromBuild(c, out)

+		assert.Assert(c, is.Len(ids, 1))

 		return ids[len(ids)-1]

 	}