diff --git a/core/src/main/java/hudson/PluginWrapper.java b/core/src/main/java/hudson/PluginWrapper.java
index 4a59d350e8a4fbac90085383fec7500ecbd987d0..c9de07966cb4f90bd77fba55f66963321fbf4974 100644
--- a/core/src/main/java/hudson/PluginWrapper.java
+++ b/core/src/main/java/hudson/PluginWrapper.java
@@ -210,7 +210,7 @@ public final class PluginWrapper {
      * Returns a one-line descriptive name of this plugin.
      */
     public String getLongName() {
-        String name = manifest.getMainAttributes().getValue("Long-PluginName");
+        String name = manifest.getMainAttributes().getValue("Long-Name");
         if(name!=null)      return name;
         return shortName;
     }