diff --git a/lib/saml.js b/lib/saml.js
index 64180fdd7fe6302bf8da7d1ca65c01bb1ea5e2c1..7015c3b73603f624c15195a0a38c2fbf750a4c60 100644
--- a/lib/saml.js
+++ b/lib/saml.js
@@ -327,7 +327,8 @@ class SAML {
         const requestOrResponse = request || response;
         (0, utility_1.assertRequired)(requestOrResponse, "either request or response is required");
         let buffer;
-        if (this.options.skipRequestCompression) {
+       // logout requestOrResponse must be compressed anyway
+        if (this.options.skipRequestCompression && operation !== "logout") {
             buffer = Buffer.from(requestOrResponse, "utf8");
         }
         else {
@@ -510,7 +511,7 @@ class SAML {
         try {
             xml = Buffer.from(container.SAMLResponse, "base64").toString("utf8");
             doc = await (0, xml_1.parseDomFromString)(xml);
-            const inResponseToNodes = xml_1.xpath.selectAttributes(doc, "/*[local-name()='Response']/@InResponseTo");
+            const inResponseToNodes = xml_1.xpath.selectAttributes(doc, "/*[local-name()='Response' or local-name()='LogoutResponse']/@InResponseTo");
             if (inResponseToNodes) {
                 inResponseTo = inResponseToNodes.length ? inResponseToNodes[0].nodeValue : null;
                 await this.validateInResponseTo(inResponseTo);