diff --git a/listeners.go b/listeners.go
index e52561dc..f20d56c1 100644
--- a/listeners.go
+++ b/listeners.go
@@ -360,7 +360,7 @@ func SplitNetworkAddress(a string) (network, host, port string, err error) {
 		network = strings.ToLower(strings.TrimSpace(a[:idx]))
 		a = a[idx+1:]
 	}
-	if network == "unix" || network == "unixgram" || network == "unixpacket" {
+	if isUnixNetwork(network) {
 		host = a
 		return
 	}
@@ -369,8 +369,9 @@ func SplitNetworkAddress(a string) (network, host, port string, err error) {
 }
 
 // JoinNetworkAddress combines network, host, and port into a single
-// address string of the form accepted by ParseNetworkAddress(). For unix sockets, the network
-// should be "unix" and the path to the socket should be given as the
+// address string of the form accepted by ParseNetworkAddress(). For
+// unix sockets, the network should be "unix" (or "unixgram" or
+// "unixpacket") and the path to the socket should be given as the
 // host parameter.
 func JoinNetworkAddress(network, host, port string) string {
 	var a string
diff --git a/modules/caddyhttp/reverseproxy/healthchecks.go b/modules/caddyhttp/reverseproxy/healthchecks.go
index 92b35478..a64d8455 100644
--- a/modules/caddyhttp/reverseproxy/healthchecks.go
+++ b/modules/caddyhttp/reverseproxy/healthchecks.go
@@ -117,7 +117,7 @@ func (h *Handler) doActiveHealthChecksForAllHosts() {
 				return
 			}
 			hostAddr := addr.JoinHostPort(0)
-			if addr.Network == "unix" || addr.Network == "unixgram" || addr.Network == "unixpacket" {
+			if addr.IsUnixNetwork() {
 				// this will be used as the Host portion of a http.Request URL, and
 				// paths to socket files would produce an error when creating URL,
 				// so use a fake Host value instead; unix sockets are usually local