diff --git a/core/src/main/java/net/adoptopenjdk/icedteaweb/jvm/JvmUtils.java b/core/src/main/java/net/adoptopenjdk/icedteaweb/jvm/JvmUtils.java
index ed292c65a..ec2bfc620 100644
--- a/core/src/main/java/net/adoptopenjdk/icedteaweb/jvm/JvmUtils.java
+++ b/core/src/main/java/net/adoptopenjdk/icedteaweb/jvm/JvmUtils.java
@@ -7,6 +7,7 @@
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
@@ -374,7 +375,7 @@ public static String[] getValidStartingJavaModuleVMArguments() {
      * Defined in itw-modularjdk.args. Required for running ITW with jdk 9 or higher
      */
     static Map<String, Set<String>> getPredefinedJavaModulesVMArgumentsMap() {
-        return new HashMap<String, Set<String>>() {{
+        return new LinkedHashMap<String, Set<String>>() {{
             put("--add-reads=java.base", moduleArgs("ALL-UNNAMED", "java.desktop"));
             put("--add-reads=java.desktop", moduleArgs("ALL-UNNAMED", "java.naming"));
             put("--add-reads=java.naming", moduleArgs("ALL-UNNAMED", "java.desktop"));
diff --git a/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java b/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java
index 6c2372237..78dca8195 100644
--- a/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java
+++ b/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java
@@ -43,6 +43,7 @@
 import net.adoptopenjdk.icedteaweb.xmlparser.XMLParser;
 import net.adoptopenjdk.icedteaweb.xmlparser.XmlNode;
 import net.adoptopenjdk.icedteaweb.xmlparser.XmlParserFactory;
+import net.sourceforge.jnlp.runtime.ApplicationInstance;
 import net.sourceforge.jnlp.runtime.JNLPRuntime;
 import net.sourceforge.jnlp.util.UrlUtils;
 import sun.net.www.protocol.http.HttpURLConnection;
@@ -259,7 +260,8 @@ protected JNLPFile() {
         parse(input, location, null);
 
         final String httpAgent = getResources().getPropertiesMap().get(HTTP_AGENT);
-        if (! StringUtils.isBlank(httpAgent)) {
+        // Do not set http.agent in stage 2 as it can be set from  the vmarg to the jvm
+        if (! StringUtils.isBlank(httpAgent) && !"true".equalsIgnoreCase(System.getenv(ApplicationInstance.IGNORE_JNLP_RESOURCE_PROPERTIES))) {
             System.setProperty(HTTP_AGENT, httpAgent);
             if (!HttpURLConnection.userAgent.contains(httpAgent)) {
                 LOG.warn("Cannot set HTTP User-Agent as a connection has been opened before reading the JNLP file");
diff --git a/core/src/main/java/net/sourceforge/jnlp/runtime/ApplicationInstance.java b/core/src/main/java/net/sourceforge/jnlp/runtime/ApplicationInstance.java
index d16a34f3d..17d583a7b 100644
--- a/core/src/main/java/net/sourceforge/jnlp/runtime/ApplicationInstance.java
+++ b/core/src/main/java/net/sourceforge/jnlp/runtime/ApplicationInstance.java
@@ -53,6 +53,7 @@ public class ApplicationInstance {
 
     private static final String DEPLOYMENT_SYSPROP = "deployment.javaws";
     private static final String DEPLOYMENT_SYSPROP_VALUE = "IcedTea-Web";
+    public static final String IGNORE_JNLP_RESOURCE_PROPERTIES = "ignoreJnlpResourceProperties";
 
     // todo: should attempt to unload the environment variables
     // installed by the application.
@@ -134,6 +135,17 @@ public void finalize() {
      * Install the environment variables.
      */
     private void installEnvironment() {
+        setSystemPropertiesFromJnlp();
+
+        // The "deployment.javaws" flag is always set to "IcedTea-Web" to make it possible
+        // for the started application to detect the execution context.
+        System.setProperty(DEPLOYMENT_SYSPROP, DEPLOYMENT_SYSPROP_VALUE);
+    }
+
+    private void setSystemPropertiesFromJnlp() {
+        if ("true".equalsIgnoreCase(System.getenv(IGNORE_JNLP_RESOURCE_PROPERTIES)))  {
+            return;
+        }
         final List<PropertyDesc> props = collectPropertiesFromJnlpHierarchy(new ArrayList<>(), file);
 
         if (!(props.size() == 0)) {
@@ -146,19 +158,15 @@ private void installEnvironment() {
 
             final PrivilegedAction<Object> setPropertiesAction = () -> {
                 for (PropertyDesc propDesc : props) {
-                    LOG.debug("Setting Property {}", propDesc.getKey());
+                    LOG.debug("Setting System Property {} with value {}", propDesc.getKey(), propDesc.getValue());
                     System.setProperty(propDesc.getKey(), propDesc.getValue());
                 }
                 return null;
             };
 
-            LOG.info("about to set system properties");
+            LOG.info("About to set system properties");
             AccessController.doPrivileged(setPropertiesAction, acc);
         }
-
-        // The "deployment.javaws" flag is always set to "IcedTea-Web" to make it possible
-        // for the started application to detect the execution context.
-        System.setProperty(DEPLOYMENT_SYSPROP, DEPLOYMENT_SYSPROP_VALUE);
     }
 
     /**
@@ -305,5 +313,4 @@ private List<PropertyDesc> collectPropertiesFromJnlpHierarchy(List<PropertyDesc>
         }
         return props;
     }
-
 }