diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 277dfe65959..f4cb43e34f6 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -510,6 +510,9 @@ Bug Fixes
 * SOLR-3820: Solr Admin Query form is missing some edismax request parameters
   (steffkes)
 
+* SOLR-4217: post.jar no longer ignores -Dparams when -Durl is used.
+  (Alexandre Rafalovitch, ehatcher)
+
 Other Changes
 ----------------------
 
diff --git a/solr/core/src/java/org/apache/solr/util/SimplePostTool.java b/solr/core/src/java/org/apache/solr/util/SimplePostTool.java
index c497406639c..7ccb6d8cda5 100644
--- a/solr/core/src/java/org/apache/solr/util/SimplePostTool.java
+++ b/solr/core/src/java/org/apache/solr/util/SimplePostTool.java
@@ -196,7 +196,8 @@ public class SimplePostTool {
         fatal("System Property 'data' is not valid for this tool: " + mode);
       }
       String params = System.getProperty("params", "");
-      urlStr = System.getProperty("url", SimplePostTool.appendParam(DEFAULT_POST_URL, params));
+      urlStr = System.getProperty("url", DEFAULT_POST_URL);
+      urlStr = SimplePostTool.appendParam(urlStr, params);
       URL url = new URL(urlStr);
       boolean auto = isOn(System.getProperty("auto", DEFAULT_AUTO));
       String type = System.getProperty("type");
diff --git a/solr/core/src/test/org/apache/solr/util/SimplePostToolTest.java b/solr/core/src/test/org/apache/solr/util/SimplePostToolTest.java
index 863c1690747..0cb7d74de99 100644
--- a/solr/core/src/test/org/apache/solr/util/SimplePostToolTest.java
+++ b/solr/core/src/test/org/apache/solr/util/SimplePostToolTest.java
@@ -56,6 +56,7 @@ public class SimplePostToolTest extends SolrTestCaseJ4 {
     t_web = SimplePostTool.parseArgsAndInit(args);
 
     System.setProperty("params", "param1=foo&param2=bar");
+    System.setProperty("url", "http://localhost:5150/solr/update");
     t_test = SimplePostTool.parseArgsAndInit(args);
 
     pf = new MockPageFetcher();
@@ -76,7 +77,7 @@ public class SimplePostToolTest extends SolrTestCaseJ4 {
     assertEquals(1, t_web.recursive);
     assertEquals(10, t_web.delay);
     
-    assertNotNull(t_test.solrUrl);
+    assertEquals("http://localhost:5150/solr/update?param1=foo&param2=bar",t_test.solrUrl.toExternalForm());
   }
   
   @Test