diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/api/PushCommand.java b/org.eclipse.jgit/src/org/eclipse/jgit/api/PushCommand.java
index aa5a63499..dc681bad0 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/api/PushCommand.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/api/PushCommand.java
@@ -98,6 +98,7 @@ public Iterable<PushResult> call() throws GitAPIException,
 			InvalidRemoteException,
 			org.eclipse.jgit.api.errors.TransportException {
 		checkCallable();
+		setCallable(false);
 
 		ArrayList<PushResult> pushResults = new ArrayList<>(3);