diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java
index 242d1c48b..7fe9066a3 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java
@@ -153,10 +153,13 @@ public abstract class JschConfigSessionFactory extends SshSessionFactory {
 
 		} catch (JSchException je) {
 			final Throwable c = je.getCause();
-			if (c instanceof UnknownHostException)
-				throw new TransportException(uri, JGitText.get().unknownHost);
-			if (c instanceof ConnectException)
-				throw new TransportException(uri, c.getMessage());
+			if (c instanceof UnknownHostException) {
+				throw new TransportException(uri, JGitText.get().unknownHost,
+						je);
+			}
+			if (c instanceof ConnectException) {
+				throw new TransportException(uri, c.getMessage(), je);
+			}
 			throw new TransportException(uri, je.getMessage(), je);
 		}