diff --git a/internal/params/openvpn.go b/internal/params/openvpn.go
index d4c51432..88b47183 100644
--- a/internal/params/openvpn.go
+++ b/internal/params/openvpn.go
@@ -15,7 +15,7 @@ func (p *paramsReader) GetUser() (s string, err error) {
 			err = unsetenvErr
 		}
 	}()
-	s, err = p.envParams.GetEnv("USER")
+	s, err = p.envParams.GetEnv("USER", libparams.CaseSensitiveValue())
 	if err != nil {
 		return "", err
 	} else if len(s) == 0 {
@@ -32,7 +32,7 @@ func (p *paramsReader) GetPassword() (s string, err error) {
 			err = unsetenvErr
 		}
 	}()
-	s, err = p.envParams.GetEnv("PASSWORD")
+	s, err = p.envParams.GetEnv("PASSWORD", libparams.CaseSensitiveValue())
 	if err != nil {
 		return "", err
 	} else if len(s) == 0 {
diff --git a/internal/params/pia.go b/internal/params/pia.go
index 8ddf1472..d2f876f1 100644
--- a/internal/params/pia.go
+++ b/internal/params/pia.go
@@ -28,7 +28,7 @@ func (p *paramsReader) GetPortForwarding() (activated bool, err error) {
 // GetPortForwardingStatusFilepath obtains the port forwarding status file path
 // from the environment variable PORT_FORWARDING_STATUS_FILE
 func (p *paramsReader) GetPortForwardingStatusFilepath() (filepath models.Filepath, err error) {
-	filepathStr, err := p.envParams.GetPath("PORT_FORWARDING_STATUS_FILE", libparams.Default("/forwarded_port"))
+	filepathStr, err := p.envParams.GetPath("PORT_FORWARDING_STATUS_FILE", libparams.Default("/forwarded_port"), libparams.CaseSensitiveValue())
 	return models.Filepath(filepathStr), err
 }
 
diff --git a/internal/params/shadowsocks.go b/internal/params/shadowsocks.go
index aee2f340..aef7157c 100644
--- a/internal/params/shadowsocks.go
+++ b/internal/params/shadowsocks.go
@@ -36,5 +36,5 @@ func (p *paramsReader) GetShadowSocksPort() (port uint16, err error) {
 // SHADOWSOCKS_PASSWORD
 func (p *paramsReader) GetShadowSocksPassword() (password string, err error) {
 	defer p.unsetEnv("SHADOWSOCKS_PASSWORD")
-	return p.envParams.GetEnv("SHADOWSOCKS_PASSWORD")
+	return p.envParams.GetEnv("SHADOWSOCKS_PASSWORD", libparams.CaseSensitiveValue())
 }
diff --git a/internal/params/tinyproxy.go b/internal/params/tinyproxy.go
index f98e4f2b..134a4045 100644
--- a/internal/params/tinyproxy.go
+++ b/internal/params/tinyproxy.go
@@ -65,7 +65,7 @@ func (p *paramsReader) GetTinyProxyUser() (user string, err error) {
 	defer p.unsetEnv("PROXY_USER")
 	defer p.unsetEnv("TINYPROXY_USER")
 	// Retro-compatibility
-	user, err = p.envParams.GetEnv("PROXY_USER")
+	user, err = p.envParams.GetEnv("PROXY_USER", libparams.CaseSensitiveValue())
 	if err != nil {
 		return user, err
 	}
@@ -73,7 +73,7 @@ func (p *paramsReader) GetTinyProxyUser() (user string, err error) {
 		p.logger.Warn("You are using the old environment variable PROXY_USER, please consider changing it to TINYPROXY_USER")
 		return user, nil
 	}
-	return p.envParams.GetEnv("TINYPROXY_USER")
+	return p.envParams.GetEnv("TINYPROXY_USER", libparams.CaseSensitiveValue())
 }
 
 // GetTinyProxyPassword obtains the TinyProxy server password from the environment variable
@@ -82,7 +82,7 @@ func (p *paramsReader) GetTinyProxyPassword() (password string, err error) {
 	defer p.unsetEnv("PROXY_PASSWORD")
 	defer p.unsetEnv("TINYPROXY_PASSWORD")
 	// Retro-compatibility
-	password, err = p.envParams.GetEnv("PROXY_PASSWORD")
+	password, err = p.envParams.GetEnv("PROXY_PASSWORD", libparams.CaseSensitiveValue())
 	if err != nil {
 		return password, err
 	}
@@ -90,5 +90,5 @@ func (p *paramsReader) GetTinyProxyPassword() (password string, err error) {
 		p.logger.Warn("You are using the old environment variable PROXY_PASSWORD, please consider changing it to TINYPROXY_PASSWORD")
 		return password, nil
 	}
-	return p.envParams.GetEnv("TINYPROXY_PASSWORD")
+	return p.envParams.GetEnv("TINYPROXY_PASSWORD", libparams.CaseSensitiveValue())
 }
diff --git a/internal/params/version.go b/internal/params/version.go
index 02780887..876b57dc 100644
--- a/internal/params/version.go
+++ b/internal/params/version.go
@@ -2,19 +2,20 @@ package params
 
 import (
 	"github.com/qdm12/golibs/params"
+	libparams "github.com/qdm12/golibs/params"
 )
 
 func (p *paramsReader) GetVersion() string {
-	version, _ := p.envParams.GetEnv("VERSION", params.Default("?"))
+	version, _ := p.envParams.GetEnv("VERSION", params.Default("?"), libparams.CaseSensitiveValue())
 	return version
 }
 
 func (p *paramsReader) GetBuildDate() string {
-	buildDate, _ := p.envParams.GetEnv("BUILD_DATE", params.Default("?"))
+	buildDate, _ := p.envParams.GetEnv("BUILD_DATE", params.Default("?"), libparams.CaseSensitiveValue())
 	return buildDate
 }
 
 func (p *paramsReader) GetVcsRef() string {
-	buildDate, _ := p.envParams.GetEnv("VCS_REF", params.Default("?"))
+	buildDate, _ := p.envParams.GetEnv("VCS_REF", params.Default("?"), libparams.CaseSensitiveValue())
 	return buildDate
 }