diff --git a/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java b/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java
index 78dca8195..b988b46ab 100644
--- a/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java
+++ b/core/src/main/java/net/sourceforge/jnlp/JNLPFile.java
@@ -261,7 +261,7 @@ protected JNLPFile() {
 
         final String httpAgent = getResources().getPropertiesMap().get(HTTP_AGENT);
         // 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))) {
+        if (! StringUtils.isBlank(httpAgent) && !"true".equalsIgnoreCase(System.getenv(ApplicationInstance.IGNORE_HTTP_AGENT_PROPERTY))) {
             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 17d583a7b..ddface9ee 100644
--- a/core/src/main/java/net/sourceforge/jnlp/runtime/ApplicationInstance.java
+++ b/core/src/main/java/net/sourceforge/jnlp/runtime/ApplicationInstance.java
@@ -16,6 +16,7 @@
 
 package net.sourceforge.jnlp.runtime;
 
+import net.adoptopenjdk.icedteaweb.JavaSystemPropertiesConstants;
 import net.adoptopenjdk.icedteaweb.jnlp.element.resource.ExtensionDesc;
 import net.adoptopenjdk.icedteaweb.jnlp.element.resource.PropertyDesc;
 import net.adoptopenjdk.icedteaweb.jnlp.element.security.SecurityDesc;
@@ -53,7 +54,7 @@ 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";
+    public static final String IGNORE_HTTP_AGENT_PROPERTY = "ignoreHttpAgentProperty";
 
     // todo: should attempt to unload the environment variables
     // installed by the application.
@@ -143,9 +144,6 @@ private void installEnvironment() {
     }
 
     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)) {
@@ -158,8 +156,11 @@ private void setSystemPropertiesFromJnlp() {
 
             final PrivilegedAction<Object> setPropertiesAction = () -> {
                 for (PropertyDesc propDesc : props) {
-                    LOG.debug("Setting System Property {} with value {}", propDesc.getKey(), propDesc.getValue());
-                    System.setProperty(propDesc.getKey(), propDesc.getValue());
+                    if (!propDesc.getKey().equals(JavaSystemPropertiesConstants.HTTP_AGENT)) {
+                        setSystemProperty(propDesc);
+                    } else if (!"true".equalsIgnoreCase(System.getenv(ApplicationInstance.IGNORE_HTTP_AGENT_PROPERTY))) {
+                        setSystemProperty(propDesc);
+                    }
                 }
                 return null;
             };
@@ -169,6 +170,11 @@ private void setSystemPropertiesFromJnlp() {
         }
     }
 
+    private void setSystemProperty(PropertyDesc propDesc) {
+        LOG.debug("Setting System Property {} with value {}", propDesc.getKey(), propDesc.getValue());
+        System.setProperty(propDesc.getKey(), propDesc.getValue());
+    }
+
     /**
      * Returns the jnlpfile on which is this application based
      * @return JNLP file for this task.