diff --git a/cliv2/internal/cliv2/cliv2.go b/cliv2/internal/cliv2/cliv2.go
index dd778c8e3c..d0d153385d 100644
--- a/cliv2/internal/cliv2/cliv2.go
+++ b/cliv2/internal/cliv2/cliv2.go
@@ -162,19 +162,29 @@ func PrepareV1EnvironmentVariables(input []string, integrationName string, integ
 	}
 
 	if err == nil {
+
+		// apply blacklist: ensure that no existing no_proxy or other configuration causes redirecting internal communication that is meant to stay between cliv1 and cliv2
+		blackList := []string{
+			SNYK_HTTPS_PROXY_ENV,
+			SNYK_HTTP_PROXY_ENV,
+			SNYK_CA_CERTIFICATE_LOCATION_ENV,
+			SNYK_HTTP_NO_PROXY_ENV,
+			SNYK_NPM_NO_PROXY_ENV,
+			SNYK_NPM_HTTPS_PROXY_ENV,
+			SNYK_NPM_HTTP_PROXY_ENV,
+			SNYK_NPM_PROXY_ENV,
+			SNYK_NPM_ALL_PROXY,
+		}
+
+		for _, key := range blackList {
+			inputAsMap = utils.Remove(inputAsMap, key)
+		}
+
+		// fill expected values
 		inputAsMap[SNYK_HTTPS_PROXY_ENV] = proxyAddress
 		inputAsMap[SNYK_HTTP_PROXY_ENV] = proxyAddress
 		inputAsMap[SNYK_CA_CERTIFICATE_LOCATION_ENV] = caCertificateLocation
 
-		// ensure that no existing no_proxy or other configuration causes redirecting internal communication that is meant to stay between cliv1 and cliv2
-		inputAsMap[SNYK_HTTP_NO_PROXY_ENV] = ""
-		inputAsMap[SNYK_NPM_NO_PROXY_ENV] = ""
-		inputAsMap[SNYK_NPM_HTTPS_PROXY_ENV] = ""
-		inputAsMap[SNYK_NPM_HTTP_PROXY_ENV] = ""
-		inputAsMap[SNYK_NPM_PROXY_ENV] = ""
-		inputAsMap[SNYK_NPM_ALL_PROXY] = ""
-
-		inputAsMap = utils.RemoveEmptyValue(inputAsMap)
 		result = utils.ToSlice(inputAsMap, "=")
 	}
 
diff --git a/cliv2/internal/cliv2/cliv2_test.go b/cliv2/internal/cliv2/cliv2_test.go
index 7c08307b42..99c840484d 100644
--- a/cliv2/internal/cliv2/cliv2_test.go
+++ b/cliv2/internal/cliv2/cliv2_test.go
@@ -12,16 +12,17 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func Test_PrepareV1EnvironmentVariables_Fill(t *testing.T) {
+func Test_PrepareV1EnvironmentVariables_Fill_and_Filter(t *testing.T) {
 
-	input := []string{"something=1",
+	input := []string{
+		"something=1",
 		"in=2",
 		"here=3=2",
-		"NO_PROXY=something",
+		"no_proxy=something",
 		"NPM_CONFIG_PROXY=something",
 		"NPM_CONFIG_HTTPS_PROXY=something",
 		"NPM_CONFIG_HTTP_PROXY=something",
-		"NPM_CONFIG_NO_PROXY=something",
+		"npm_config_no_proxy=something",
 		"ALL_PROXY=something",
 	}
 	expected := []string{"something=1", "in=2", "here=3=2", "SNYK_INTEGRATION_NAME=foo", "SNYK_INTEGRATION_VERSION=bar", "HTTP_PROXY=proxy", "HTTPS_PROXY=proxy", "NODE_EXTRA_CA_CERTS=cacertlocation"}
@@ -34,10 +35,23 @@ func Test_PrepareV1EnvironmentVariables_Fill(t *testing.T) {
 	assert.Nil(t, err)
 }
 
-func Test_PrepareV1EnvironmentVariables_DontOverrideExisting(t *testing.T) {
+func Test_PrepareV1EnvironmentVariables_DontOverrideExistingIntegration(t *testing.T) {
 
-	input := []string{"something=1", "in=2", "here=3", "SNYK_INTEGRATION_NAME=exists", "SNYK_INTEGRATION_VERSION=already", "HTTP_PROXY=proxy", "HTTPS_PROXY=proxy", "NODE_EXTRA_CA_CERTS=cacertlocation"}
-	expected := input
+	input := []string{"something=1", "in=2", "here=3", "SNYK_INTEGRATION_NAME=exists", "SNYK_INTEGRATION_VERSION=already"}
+	expected := []string{"something=1", "in=2", "here=3", "SNYK_INTEGRATION_NAME=exists", "SNYK_INTEGRATION_VERSION=already", "HTTP_PROXY=proxy", "HTTPS_PROXY=proxy", "NODE_EXTRA_CA_CERTS=cacertlocation"}
+
+	actual, err := cliv2.PrepareV1EnvironmentVariables(input, "foo", "bar", "proxy", "cacertlocation")
+
+	sort.Strings(expected)
+	sort.Strings(actual)
+	assert.Equal(t, expected, actual)
+	assert.Nil(t, err)
+}
+
+func Test_PrepareV1EnvironmentVariables_OverrideProxyAndCerts(t *testing.T) {
+
+	input := []string{"something=1", "in=2", "here=3", "http_proxy=exists", "https_proxy=already", "NODE_EXTRA_CA_CERTS=again", "no_proxy=312123"}
+	expected := []string{"something=1", "in=2", "here=3", "SNYK_INTEGRATION_NAME=foo", "SNYK_INTEGRATION_VERSION=bar", "HTTP_PROXY=proxy", "HTTPS_PROXY=proxy", "NODE_EXTRA_CA_CERTS=cacertlocation"}
 
 	actual, err := cliv2.PrepareV1EnvironmentVariables(input, "foo", "bar", "proxy", "cacertlocation")
 
@@ -47,7 +61,7 @@ func Test_PrepareV1EnvironmentVariables_DontOverrideExisting(t *testing.T) {
 	assert.Nil(t, err)
 }
 
-func Test_PrepareV1EnvironmentVariables_DontOverrideExisting2(t *testing.T) {
+func Test_PrepareV1EnvironmentVariables_Fail_DontOverrideExisting(t *testing.T) {
 
 	input := []string{"something=1", "in=2", "here=3", "SNYK_INTEGRATION_NAME=exists"}
 	expected := input
diff --git a/cliv2/internal/utils/array.go b/cliv2/internal/utils/array.go
index 4430915f21..03c8b73368 100644
--- a/cliv2/internal/utils/array.go
+++ b/cliv2/internal/utils/array.go
@@ -52,14 +52,36 @@ func ToSlice(input map[string]string, combineBy string) []string {
 	return result
 }
 
-func RemoveEmptyValue(input map[string]string) map[string]string {
-	result := make(map[string]string)
+// Removes a given key from the input map and uses FindKeyCaseInsensitive() for this. The resulting map is being returned.
+func Remove(input map[string]string, key string) map[string]string {
+	found := false
+	key, found = FindKeyCaseInsensitive(input, key)
+	if found {
+		delete(input, key)
+	}
+	return input
+}
 
-	for key, value := range input {
-		if len(value) > 0 {
-			result[key] = value
-		}
+// This method determines whether the given key is in the input map, it therefore looks for the exact match and the key in all capital or lower case letters.
+// If the key in any of these versions was found, it'll be returned alongside with a boolean indicating whether or not it was found.
+func FindKeyCaseInsensitive(input map[string]string, key string) (string, bool) {
+
+	found := false
+
+	// look for exact match
+	_, found = input[key]
+
+	// look for lower case match
+	if !found {
+		key = strings.ToLower(key)
+		_, found = input[key]
 	}
 
-	return result
+	// look for upper case match
+	if !found {
+		key = strings.ToUpper(key)
+		_, found = input[key]
+	}
+
+	return key, found
 }