diff --git a/configs.json b/configs.json
index 0561bd7..7485545 100644
--- a/configs.json
+++ b/configs.json
@@ -7,11 +7,13 @@
                 "args": [
                     "http_proxy"
                 ],
+                "surround": "\"",
                 "type": "variable"
             }, {
                 "args": [
                     "https_proxy"
                 ],
+                "surround": "\"",
                 "type": "variable"
             }
         ],
diff --git a/proxy/util.go b/proxy/util.go
index 59f0e14..8e25fff 100644
--- a/proxy/util.go
+++ b/proxy/util.go
@@ -2,6 +2,7 @@ package proxy
 
 import (
 	"errors"
+	"fmt"
 	"strings"
 
 	"github.com/Baipyrus/ProxySwitcher/util"
@@ -31,6 +32,11 @@ func applyProxy(configArgs []string, configCmd, proxyServer string, variant *uti
 		return configArgs, configCmd
 	}
 
+	// Surround 'proxyServer' with any given string, if provided
+	if variant.Surround != "" {
+		proxyServer = fmt.Sprintf("%[1]s%[2]s%[1]s", variant.Surround, proxyServer)
+	}
+
 	// Insert proxy only on last VARIABLE type
 	if variant.Type == util.VARIABLE && strings.Count(configCmd, "$PRSW_ARG") == 1 {
 		configCmd = strings.Replace(configCmd, "$PRSW_ARG", proxyServer, 1)
diff --git a/util/types.go b/util/types.go
index 5c87de4..711f7dc 100644
--- a/util/types.go
+++ b/util/types.go
@@ -18,6 +18,7 @@ type Variant struct {
 	Arguments    []string    `json:"args"`
 	Type         VariantType `json:"type,omitempty"`
 	Equator      string      `json:"equator,omitempty"`
+	Surround     string      `json:"surround,omitempty"`
 	DiscardProxy bool        `json:"discard,omitempty"`
 }