diff --git a/src/java/org/apache/ivy/core/module/descriptor/DefaultDependencyDescriptor.java b/src/java/org/apache/ivy/core/module/descriptor/DefaultDependencyDescriptor.java
index 0b628692..114a9336 100644
--- a/src/java/org/apache/ivy/core/module/descriptor/DefaultDependencyDescriptor.java
+++ b/src/java/org/apache/ivy/core/module/descriptor/DefaultDependencyDescriptor.java
@@ -203,6 +203,7 @@ public class DefaultDependencyDescriptor implements DependencyDescriptor {
     public DefaultDependencyDescriptor(ModuleRevisionId mrid, boolean force, boolean changing) {
         md = null;
         revId = mrid;
+        dynamicRevId = mrid;
         isForce = force;
         isChanging = changing;
     }
diff --git a/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorUpdater.java b/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorUpdater.java
index 4ce6af5d..06d2d5c0 100644
--- a/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorUpdater.java
+++ b/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorUpdater.java
@@ -384,7 +384,8 @@ public final class XmlModuleDescriptorUpdater {
                     String rev = (String) resolvedRevisions.get(systemMrid);
                     if (rev != null) {
                         write(" rev=\"" + rev + "\"");
-                        if (attributes.getIndex("revConstraint") == -1) {
+                        if (attributes.getIndex("revConstraint") == -1 
+                                && !rev.equals(systemMrid.getRevision())) {
                             write(" revConstraint=\"" + systemMrid.getRevision() + "\"");
                         }
                     } else {