diff --git a/package-lock.json b/package-lock.json
index 3c0efa3..3f53f2c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "node-fetch-cookies",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index c1cd0d2..7f61632 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-fetch-cookies",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "node-fetch wrapper that adds support for cookie-jars",
   "main": "src/index.mjs",
   "engines": {
diff --git a/src/index.mjs b/src/index.mjs
index 1bdc532..eb341ed 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -19,8 +19,9 @@ async function fetch(cookieJars, url, options) {
     if(cookieJars) {
         if(Array.isArray(cookieJars) && cookieJars.every(c => c instanceof CookieJar))
             addValidFromJars(cookieJars.filter(jar => jar.flags.includes("r")));
-        else if(cookieJars instanceof CookieJar && cookieJars.flags.includes("r"))
-            addValidFromJars([cookieJars]);
+        else if(cookieJars instanceof CookieJar)
+            if(cookieJars.flags.includes("r"))
+                addValidFromJars([cookieJars]);
         else
             throw paramError("First", "cookieJars", "fetch", ["CookieJar", "[CookieJar]"]);
     }