diff --git a/iptables/iptables.go b/iptables/iptables.go
index 3e083a4..53ed45f 100644
--- a/iptables/iptables.go
+++ b/iptables/iptables.go
@@ -260,7 +260,7 @@ func Exists(table Table, chain string, rule ...string) bool {
 
 	// parse "iptables -S" for the rule (this checks rules in a specific chain
 	// in a specific table)
-	rule_string := strings.Join(rule, " ")
+	ruleString := strings.Join(rule, " ")
 	existingRules, _ := exec.Command("iptables", "-t", string(table), "-S", chain).Output()
 
 	// regex to replace ips in rule
@@ -269,7 +269,7 @@ func Exists(table Table, chain string, rule ...string) bool {
 
 	return strings.Contains(
 		re.ReplaceAllString(string(existingRules), "?"),
-		re.ReplaceAllString(rule_string, "?"),
+		re.ReplaceAllString(ruleString, "?"),
 	)
 }
 
diff --git a/mflag/flag.go b/mflag/flag.go
index b35692b..81369f8 100644
--- a/mflag/flag.go
+++ b/mflag/flag.go
@@ -941,11 +941,11 @@ func (f *FlagSet) parseOne() (bool, string, error) {
 
 	// it's a flag. does it have an argument?
 	f.args = f.args[1:]
-	has_value := false
+	hasValue := false
 	value := ""
 	if i := strings.Index(name, "="); i != -1 {
 		value = trimQuotes(name[i+1:])
-		has_value = true
+		hasValue = true
 		name = name[:i]
 	}
 
@@ -962,7 +962,7 @@ func (f *FlagSet) parseOne() (bool, string, error) {
 		return false, name, ErrRetry
 	}
 	if fv, ok := flag.Value.(boolFlag); ok && fv.IsBoolFlag() { // special case: doesn't need an arg
-		if has_value {
+		if hasValue {
 			if err := fv.Set(value); err != nil {
 				return false, "", f.failf("invalid boolean value %q for  -%s: %v", value, name, err)
 			}
@@ -971,12 +971,12 @@ func (f *FlagSet) parseOne() (bool, string, error) {
 		}
 	} else {
 		// It must have a value, which might be the next argument.
-		if !has_value && len(f.args) > 0 {
+		if !hasValue && len(f.args) > 0 {
 			// value is the next arg
-			has_value = true
+			hasValue = true
 			value, f.args = f.args[0], f.args[1:]
 		}
-		if !has_value {
+		if !hasValue {
 			return false, "", f.failf("flag needs an argument: -%s", name)
 		}
 		if err := flag.Value.Set(value); err != nil {