diff --git a/pkg/exprhelpers/exprlib.go b/pkg/exprhelpers/exprlib.go
index 5de7114ac..26d29b5c2 100644
--- a/pkg/exprhelpers/exprlib.go
+++ b/pkg/exprhelpers/exprlib.go
@@ -64,7 +64,7 @@ func GetExprEnv(ctx map[string]interface{}) map[string]interface{} {
 		"XMLGetNodeValue":        XMLGetNodeValue,
 		"IpToRange":              IpToRange,
 		"IsIPV6":                 IsIPV6,
-		"LookupHost":             net.LookupHost,
+		"LookupHost":             LookupHost,
 		"GetDecisionsCount":      GetDecisionsCount,
 		"GetDecisionsSinceCount": GetDecisionsSinceCount,
 		"Sprintf":                fmt.Sprintf,
@@ -281,3 +281,12 @@ func GetDecisionsSinceCount(value string, since string) int {
 	}
 	return count
 }
+
+func LookupHost(value string) []string {
+	addresses , err := net.LookupHost(value)
+	if err != nil {
+		log.Errorf("Failed to lookup host '%s' : %s", value, err)
+		return []string{} 
+	}
+	return addresses
+}