diff --git a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
index b659c015b..4ac399f9e 100644
--- a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
+++ b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
@@ -77,7 +77,7 @@ cannotGetObjectsPath=Cannot get {0}/{1}: {2}
 cannotListObjectsPath=Cannot ls {0}/{1}: {2}
 cannotListPackPath=Cannot ls {0}/pack: {1}
 cannotListRefs=cannot list refs
-cannotLock=Cannot lock {0}
+cannotLock=Cannot lock {0}. Ensure that no other process has an open file handle on the lock file {0}.lock, then you may delete the lock file and retry.
 cannotLockPackIn=Cannot lock pack in {0}
 cannotMatchOnEmptyString=Cannot match on empty string.
 cannotMkdirObjectPath=Cannot mkdir {0}/{1}: {2}