1 files changed, 2 insertions, 1 deletions

diff --git a/src/revocation/gnunet-revocation.c b/src/revocation/gnunet-revocation.c
index 2c46a20e7..de9560172 100644
--- a/src/revocation/gnunet-revocation.c
+++ b/src/revocation/gnunet-revocation.c
@@ -250,7 +250,8 @@ calculate_pow_shutdown (void *cls)
     GNUNET_SCHEDULER_cancel (pow_task);
     pow_task = NULL;
   }
-  GNUNET_REVOCATION_pow_cleanup (ph);
+  if (NULL != ph)
+    GNUNET_REVOCATION_pow_stop (ph);
 }