diff --git a/htmlSanityCheck-core/src/test/groovy/org/aim42/htmlsanitycheck/check/BrokenHttpLinksCheckerSpec.groovy b/htmlSanityCheck-core/src/test/groovy/org/aim42/htmlsanitycheck/check/BrokenHttpLinksCheckerSpec.groovy
index 684e5748..dd8be8b9 100644
--- a/htmlSanityCheck-core/src/test/groovy/org/aim42/htmlsanitycheck/check/BrokenHttpLinksCheckerSpec.groovy
+++ b/htmlSanityCheck-core/src/test/groovy/org/aim42/htmlsanitycheck/check/BrokenHttpLinksCheckerSpec.groovy
@@ -185,11 +185,10 @@ class BrokenHttpLinksCheckerSpec extends Specification {
     }
 
 
-    @Ignore // If({ !System.getenv('GITHUB_ACTIONS') })
     def "bad amazon link is identified as problem"() {
 
         given: "an HTML page with a single (good) amazon link"
-        String badAmazonLink = "https://www.amazon.com/dp/4242424242"
+        String badAmazonLink = "https://www.amazon.com:$port/dp/4242424242"
         String HTML = """$HtmlConst.HTML_HEAD 
                 <a href=${badAmazonLink}>Amazon</a>
                 $HtmlConst.HTML_END """
@@ -228,12 +227,12 @@ class BrokenHttpLinksCheckerSpec extends Specification {
 
     }
 
-    @Ignore
+
     def 'redirects are recognized and their new location is contained in warning message'() {
 
         given: "the old arc42 (http!) page "
         String HTML = """$HtmlConst.HTML_HEAD 
-                <a href="https://arc42.de"</a>
+                <a href="http://arc42.de:$port/old"</a>
                 $HtmlConst.HTML_END """
 
         htmlPage = new HtmlPage(HTML)
diff --git a/htmlSanityCheck-core/src/test/java/org/aim42/htmlsanitycheck/test/dns/CustomHostNameResolver.java b/htmlSanityCheck-core/src/test/java/org/aim42/htmlsanitycheck/test/dns/CustomHostNameResolver.java
index 84261a3e..c5e7d98f 100644
--- a/htmlSanityCheck-core/src/test/java/org/aim42/htmlsanitycheck/test/dns/CustomHostNameResolver.java
+++ b/htmlSanityCheck-core/src/test/java/org/aim42/htmlsanitycheck/test/dns/CustomHostNameResolver.java
@@ -18,7 +18,8 @@ public class CustomHostNameResolver {
             "plumelib.org",
             "people.csail.mit.edu",
             "arc42.org",
-            "mock.codes"
+            "mock.codes",
+            "arc42.de"
     );
 
     static {
diff --git a/htmlSanityCheck-core/src/test/resources/mappings.json b/htmlSanityCheck-core/src/test/resources/mappings.json
index eea68ad7..d765c42e 100644
--- a/htmlSanityCheck-core/src/test/resources/mappings.json
+++ b/htmlSanityCheck-core/src/test/resources/mappings.json
@@ -97,7 +97,7 @@
     {
       "request": {
         "method": "GET_OR_HEAD",
-        "urlPattern": "/403"
+        "urlPattern": "/(403 | dp/4242424242)"
       },
       "response": {
         "status": 403,
@@ -285,6 +285,18 @@
           "Content-Type": "text/plain"
         }
       }
+    },
+    {
+      "request": {
+        "method": "GET_OR_HEAD",
+        "urlPattern": "/old"
+      },
+      "response": {
+        "status": 302,
+        "headers": {
+          "Location": "https://arc42.de"
+        }
+      }
     }
   ]
 }
\ No newline at end of file