diff --git a/src/ua-parser.js b/src/ua-parser.js
index aed8cf5..5c23510 100755
--- a/src/ua-parser.js
+++ b/src/ua-parser.js
@@ -386,6 +386,7 @@
             /(firefox|seamonkey|k-meleon|icecat|iceape|firebird|phoenix|palemoon|basilisk|waterfox)\/([\w\.-]+)$/i,
 
                                                                                 // Firefox/SeaMonkey/K-Meleon/IceCat/IceApe/Firebird/Phoenix
+            /(firefox)\/([\w\.]+)\s[\w\s\-]+\/[\w\.]+$/i,                       // Other Firefox-based
             /(mozilla)\/([\w\.]+).+rv\:.+gecko\/\d+/i,                          // Mozilla
 
             // Other
diff --git a/test/browser-test.json b/test/browser-test.json
index 23dbb2e..6212ef7 100644
--- a/test/browser-test.json
+++ b/test/browser-test.json
@@ -369,6 +369,16 @@
             "major"   : "15"
         }
     },
+    {
+        "desc"    : "Firefox-based browser",
+        "ua"      : "Mozilla/5.0 (X11; Linux x86_64; rv:80.0) Gecko/20100101 Firefox/80.0 AppName/1.0",
+        "expect"  :
+        {
+            "name"    : "Firefox",
+            "version" : "80.0",
+            "major"   : "80"
+        }
+    },
     {
         "desc"    : "Fennec",
         "ua"      : "Mozilla/5.0 (X11; U; Linux armv61; en-US; rv:1.9.1b2pre) Gecko/20081015 Fennec/1.0a1",