1 files changed, 5 insertions, 1 deletions
diff --git a/src/main/java/com/beust/jcommander/ParameterDescription.java b/src/main/java/com/beust/jcommander/ParameterDescription.java
index 33574a9..e41c782 100644
--- a/src/main/java/com/beust/jcommander/ParameterDescription.java
+++ b/src/main/java/com/beust/jcommander/ParameterDescription.java
@@ -231,7 +231,7 @@ public class ParameterDescription {
     p("Adding " + (isDefault ? "default " : "") + "value:" + value
         + " to parameter:" + m_parameterized.getName());
     String name = m_wrappedParameter.names()[0];
-    if (m_assigned && ! isMultiOption()) {
+    if (m_assigned && ! isMultiOption() && !m_jCommander.isParameterOverwritingAllowed() || isNonOverwritableForced()) {
       throw new ParameterException("Can only specify option " + name + " once.");
     }
 
@@ -358,4 +358,8 @@ public class ParameterDescription {
   public boolean isHelp() {
     return m_wrappedParameter.isHelp();
   }
+  
+  public boolean isNonOverwritableForced() {
+    return m_wrappedParameter.isNonOverwritableForced();
+  }
 }