diff --git a/dlls/mshtml/mutation.c b/dlls/mshtml/mutation.c
index 8c4fc675350..84a290e1c0d 100644
--- a/dlls/mshtml/mutation.c
+++ b/dlls/mshtml/mutation.c
@@ -371,10 +371,17 @@ static BOOL parse_ua_compatible(const WCHAR *p, compat_mode_t *r)
 {
     int v = 0;
 
+    static const WCHAR edgeW[] = {'e','d','g','e',0};
+
     if(p[0] != 'I' || p[1] != 'E' || p[2] != '=')
         return FALSE;
-
     p += 3;
+
+    if(!strcmpiW(p, edgeW)) {
+        *r = COMPAT_MODE_IE11;
+        return TRUE;
+    }
+
     while('0' <= *p && *p <= '9')
         v = v*10 + *(p++)-'0';
     if(*p || !v)
diff --git a/dlls/mshtml/tests/script.c b/dlls/mshtml/tests/script.c
index e8b3d19faeb..41aaa3e744c 100644
--- a/dlls/mshtml/tests/script.c
+++ b/dlls/mshtml/tests/script.c
@@ -3471,6 +3471,7 @@ static void run_js_tests(void)
     run_script_as_http_with_mode("documentmode.js", "?9", "9");
     run_script_as_http_with_mode("documentmode.js", "?10", "10");
     run_script_as_http_with_mode("documentmode.js", "?11", "11");
+    run_script_as_http_with_mode("documentmode.js", "?11", "edge");
 
     run_script_as_http_with_mode("asyncscriptload.js", NULL, "9");
 }