diff --git a/internal/certs/certs_test.go b/internal/certs/certs_test.go
index eb4d4d13..46323d03 100644
--- a/internal/certs/certs_test.go
+++ b/internal/certs/certs_test.go
@@ -6,48 +6,50 @@ import "testing"
 // valid certificates and throws an error at invalid certificates,
 // keys or passphrases
 func TestLoadCertificates(t *testing.T) {
-	testCert := "data/testclient.crt"
-	testKey := "data/testclientkey.pem"
-	passphrase := "qwer"
-	missingCert := "data/testclientcert_missing.crt"
-	missingTestkey := "data/testclientkey_missing.pem"
-	privateKey := "data/privated.pem"
-	privateCert := "data/cert.crt"
+	var (
+		testCert       = "data/testclient.crt"
+		testKey        = "data/testclientkey.pem"
+		passphrase     = "qwer"
+		missingCert    = "data/testclientcert_missing.crt"
+		missingTestkey = "data/testclientkey_missing.pem"
+		privateKey     = "data/privated.pem"
+		privateCert    = "data/cert.crt"
+	)
 
-	// Try to load certificate that is not protected, expect success.
-	if certificate, err := LoadCertificate(&testCert, &testKey, nil); certificate == nil || err != nil {
+	// Try to load cert that is not protected, expect success.
+	if cert, err := LoadCertificate(&testCert, &testKey, nil); cert == nil || err != nil {
 		t.Errorf("Failure: Couldn't load supposedly valid certificate.")
 	}
-	// Try to load no certificate, expect error.
-	if certificate, err := LoadCertificate(nil, &testKey, nil); certificate != nil || err == nil {
+	// Try to load no cert, expect error.
+	if cert, err := LoadCertificate(nil, &testKey, nil); cert != nil || err == nil {
 		t.Errorf("Failure: No error despite missing certificate")
 	}
-	// Try to load certificate using a nonexistent key, expect error.
-	if certificate, err := LoadCertificate(&testCert, &missingTestkey, nil); certificate != nil || err == nil {
+	// Try to load cert using a nonexistent key, expect error.
+	if cert, err := LoadCertificate(&testCert, &missingTestkey, nil); cert != nil || err == nil {
 		t.Errorf("Failure: No Failure while loading certificate using missing key.")
 	}
-	// Try to decrypt not encrypted certificate, expect error
-	if certificate, err := LoadCertificate(&testCert, &testKey, &passphrase); certificate != nil || err == nil {
+	// Try to decrypt not encrypted cert, expect error
+	if cert, err := LoadCertificate(&testCert, &testKey, &passphrase); cert != nil || err == nil {
 		t.Errorf("Failure: Could load unprotected valid certificate with passphrase.")
 	}
-	// Try to load encrypted certificate using a nonexistent key, but valid passphrase. Expect error.
-	if certificate, err := LoadCertificate(&testCert, &missingTestkey, &passphrase); certificate != nil || err == nil {
-		t.Errorf("Failure:  No Failure while loading certificate using missing key with passphrase.")
+	// Try to load encrypted cert using a nonexistent key, but valid passphrase. Expect error.
+	if cert, err := LoadCertificate(&testCert, &missingTestkey, &passphrase); cert != nil || err == nil {
+		t.Errorf("Failure: No Failure while loading certificate using missing key with passphrase.")
 	}
-	// Try to load encrypted certificate, expecting success.
-	if certificate, err := LoadCertificate(&privateCert, &privateKey, &passphrase); certificate == nil || err != nil {
+	// Try to load encrypted cert, expecting success.
+	if cert, err := LoadCertificate(&privateCert, &privateKey, &passphrase); cert == nil || err != nil {
 		t.Errorf("Failure: Couldn't load supposedly valid encrypted certificate.")
 	}
-	// Try to load wrong encrypted certificate, expecting error.
-	if certificate, err := LoadCertificate(&testKey, &privateKey, &passphrase); certificate != nil || err == nil {
-		t.Errorf("Failure:  No Failure while loading certificate using wrong encrypted key.")
+	// Try to load wrong encrypted cert, expecting error.
+	if cert, err := LoadCertificate(&testKey, &privateKey, &passphrase); cert != nil || err == nil {
+		t.Errorf("Failure: No Failure while loading certificate using wrong encrypted key.")
 	}
-	// Try to load nonexistent encrypted certificate, expecting error.
-	if certificate, err := LoadCertificate(&missingCert, &privateKey, &passphrase); certificate != nil || err == nil {
-		t.Errorf("Failure:  No Failure while loading nonexistens certificate.")
+	// Try to load nonexistent encrypted cert, expecting error.
+	if cert, err := LoadCertificate(&missingCert, &privateKey, &passphrase); cert != nil || err == nil {
+		t.Errorf("Failure: No Failure while loading nonexistens certificate.")
 	}
-	// Try to load nonexistent encrypted certificate, expecting error.
-	if certificate, err := LoadCertificate(nil, nil, nil); certificate != nil || err != nil {
-		t.Errorf("Failure:  Expected nil return.")
+	// Try to load nonexistent encrypted cert, expecting error.
+	if cert, err := LoadCertificate(nil, nil, nil); cert != nil || err != nil {
+		t.Errorf("Failure: Expected nil return.")
 	}
 }
diff --git a/internal/filter/filter_test.go b/internal/filter/filter_test.go
index 775a14b0..0ac3438c 100644
--- a/internal/filter/filter_test.go
+++ b/internal/filter/filter_test.go
@@ -22,7 +22,7 @@ func TestNewPatternMatcher(t *testing.T) {
 	}
 	regex = append(regex, "++")
 	if pm, err := NewPatternMatcher(regex); pm != nil || err == nil {
-		t.Errorf("Failure: No error thrown at invalid compile pattern")
+		t.Errorf("Failure: No error returned at invalid compile pattern")
 	}
 }
 
diff --git a/internal/misc/doc_test.go b/internal/misc/doc_test.go
deleted file mode 100644
index 1fec00ae..00000000
--- a/internal/misc/doc_test.go
+++ /dev/null
@@ -1,10 +0,0 @@
-// This file is Free Software under the MIT License
-// without warranty, see README.md and LICENSES/MIT.txt for details.
-//
-// SPDX-License-Identifier: MIT
-//
-// SPDX-FileCopyrightText: 2023 German Federal Office for Information Security (BSI) <https://www.bsi.bund.de>
-// Software-Engineering: 2023 Intevation GmbH <https://intevation.de>
-
-// Package misc implements miscellaneous helper functions.
-package misc
diff --git a/internal/misc/mime_test.go b/internal/misc/mime_test.go
index 043e5453..bd5a31c2 100644
--- a/internal/misc/mime_test.go
+++ b/internal/misc/mime_test.go
@@ -9,7 +9,7 @@
 package misc
 
 import (
-	"bytes"
+	"io"
 	"mime/multipart"
 	"testing"
 )
@@ -17,8 +17,7 @@ import (
 // TestCreateFormFile tests if CreateFormFile throws an error when creating
 // a FormFile
 func TestCreateFormFile(t *testing.T) {
-	body := new(bytes.Buffer)
-	writer := multipart.NewWriter(body)
+	writer := multipart.NewWriter(io.Discard)
 
 	if _, err := CreateFormFile(writer, "csaf", "data", "application/json"); err != nil {
 		t.Errorf("Failure: failed to create an io.Writer via CreateFormFile")
diff --git a/internal/options/options_test.go b/internal/options/options_test.go
index 0758b771..06ff93f0 100644
--- a/internal/options/options_test.go
+++ b/internal/options/options_test.go
@@ -92,8 +92,8 @@ func TestLoadToml(t *testing.T) {
 		t.Errorf("Failure: Didn't throw the correct " +
 			"error on trying to load nonexistant file")
 	}
-	if err := loadTOML(&cfg, "data/config_plus.toml"); err.Error() != "could not parse [\"surplus\"] "+
-		"from \"data/config_plus.toml\"" {
+	const errMsg = `could not parse ["surplus"] from "data/config_plus.toml"`
+	if err := loadTOML(&cfg, "data/config_plus.toml"); err.Error() != errMsg {
 		t.Errorf("Failure: Succeeded in parsing nonexistant parameter")
 	}
 	if err := loadTOML(&cfg, "data/config.toml"); err != nil {