diff --git a/xen/common/livepatch.c b/xen/common/livepatch.c
index f14bcbc8cd..df67a1aa2c 100644
--- a/xen/common/livepatch.c
+++ b/xen/common/livepatch.c
@@ -1642,7 +1642,7 @@ static void livepatch_printall(unsigned char key)
             {
                 spin_unlock(&payload_lock);
                 process_pending_softirqs();
-                if ( spin_trylock(&payload_lock) )
+                if ( !spin_trylock(&payload_lock) )
                 {
                     printk("Couldn't reacquire lock. Try again.\n");
                     return;