diff --git a/config/assets/test_config.toml b/config/assets/test_config.toml
index eda0fc1..6a2f0d0 100644
--- a/config/assets/test_config.toml
+++ b/config/assets/test_config.toml
@@ -8,15 +8,15 @@ httpServerEnabled = true
 mainDomain = 'codeberg.page'
 rawDomain = 'raw.codeberg.page'
 allowedCorsDomains = ['fonts.codeberg.org', 'design.codeberg.org']
-blacklistedPaths = []
+blacklistedPaths = ['do/not/use']
 
 [gitea]
 root = 'codeberg.org'
-token = 'XXXXX'
+token = 'XXXXXXXX'
 lfsEnabled = true
 followSymlinks = true
 defaultMimeType = "application/wasm"
-forbiddenMimeTypes = []
+forbiddenMimeTypes = ["text/html"]
 
 [database]
 type = 'sqlite'
@@ -27,7 +27,7 @@ email = 'a@b.c'
 apiEndpoint = 'https://example.com'
 acceptTerms = false
 useRateLimits = true
-eab_hmac = ''
-eab_kid = ''
-dnsProvider = ''
-accountConfigFile = ''
+eab_hmac = 'asdf'
+eab_kid = 'qwer'
+dnsProvider = 'cloudflare.com'
+accountConfigFile = 'nope'
diff --git a/config/setup_test.go b/config/setup_test.go
index 60df384..f0cab3a 100644
--- a/config/setup_test.go
+++ b/config/setup_test.go
@@ -42,6 +42,21 @@ func fixArrayFromCtx(ctx *cli.Context, key string, expected []string) []string {
 	return expected
 }
 
+func readTestConfig() (*Config, error) {
+	content, err := os.ReadFile("assets/test_config.toml")
+	if err != nil {
+		return nil, err
+	}
+
+	expectedConfig := &Config{}
+	err = toml.Unmarshal(content, expectedConfig)
+	if err != nil {
+		return nil, err
+	}
+
+	return expectedConfig, nil
+}
+
 func TestReadConfigShouldReturnEmptyConfigWhenConfigArgEmpty(t *testing.T) {
 	runApp(
 		t,
@@ -79,6 +94,39 @@ func TestReadConfigShouldReturnConfigFromFileWhenConfigArgPresent(t *testing.T)
 	)
 }
 
+func TestValuesReadFromConfigFileShouldBeOverwrittenByArgs(t *testing.T) {
+	runApp(
+		t,
+		func(ctx *cli.Context) error {
+			cfg, err := ReadConfig(ctx)
+
+			MergeConfig(ctx, cfg)
+
+			expectedConfig, err := readTestConfig()
+			if err != nil {
+				return err
+			}
+
+			expectedConfig.LogLevel = "debug"
+			expectedConfig.Gitea.Root = "not-codeberg.org"
+			expectedConfig.ACME.AcceptTerms = true
+			expectedConfig.Server.Host = "172.17.0.2"
+			expectedConfig.Server.BlacklistedPaths = append(expectedConfig.Server.BlacklistedPaths, ALWAYS_BLACKLISTED_PATHS...)
+
+			assert.Equal(t, expectedConfig, cfg)
+
+			return err
+		},
+		[]string{
+			"--config-file", "assets/test_config.toml",
+			"--log-level", "debug",
+			"--gitea-root", "not-codeberg.org",
+			"--acme-accept-terms",
+			"--host", "172.17.0.2",
+		},
+	)
+}
+
 func TestMergeConfigShouldReplaceAllExistingValuesGivenAllArgsExist(t *testing.T) {
 	runApp(
 		t,