diff -Nru golang-github-coreos-go-iptables-0.4.4/debian/changelog golang-github-coreos-go-iptables-0.4.5/debian/changelog
--- golang-github-coreos-go-iptables-0.4.4/debian/changelog	2019-12-15 04:08:59.000000000 +0000
+++ golang-github-coreos-go-iptables-0.4.5/debian/changelog	2019-12-19 05:27:04.000000000 +0000
@@ -1,3 +1,9 @@
+golang-github-coreos-go-iptables (0.4.5-1) unstable; urgency=medium
+
+  * New upstream release.
+
+ -- Dmitry Smirnov <onlyjob@debian.org>  Thu, 19 Dec 2019 16:27:04 +1100
+
 golang-github-coreos-go-iptables (0.4.4-1) unstable; urgency=medium
 
   * New upstream release.
diff -Nru golang-github-coreos-go-iptables-0.4.4/iptables/iptables.go golang-github-coreos-go-iptables-0.4.5/iptables/iptables.go
--- golang-github-coreos-go-iptables-0.4.4/iptables/iptables.go	2019-12-13 10:13:15.000000000 +0000
+++ golang-github-coreos-go-iptables-0.4.5/iptables/iptables.go	2019-12-16 16:34:29.000000000 +0000
@@ -48,9 +48,13 @@
 
 // IsNotExist returns true if the error is due to the chain or rule not existing
 func (e *Error) IsNotExist() bool {
-	return e.ExitStatus() == 1 &&
-		strings.Contains(e.msg, fmt.Sprintf("%s: Bad rule (does a matching rule exist in that chain?).\n", getIptablesCommand(e.proto))) ||
-		strings.Contains(e.msg, fmt.Sprintf("%s: No chain/target/match by that name.\n", getIptablesCommand(e.proto)))
+	if e.ExitStatus() != 1 {
+		return false
+	}
+	cmdIptables := getIptablesCommand(e.proto)
+	msgNoRuleExist := fmt.Sprintf("%s: Bad rule (does a matching rule exist in that chain?).\n", cmdIptables)
+	msgNoChainExist := fmt.Sprintf("%s: No chain/target/match by that name.\n", cmdIptables)
+	return strings.Contains(e.msg, msgNoRuleExist) || strings.Contains(e.msg, msgNoChainExist)
 }
 
 // Protocol to differentiate between IPv4 and IPv6