diff --git a/src/davidson/davidson_parallel.irp.f b/src/davidson/davidson_parallel.irp.f
index ac56fad7..be1873c7 100644
--- a/src/davidson/davidson_parallel.irp.f
+++ b/src/davidson/davidson_parallel.irp.f
@@ -270,10 +270,12 @@ subroutine davidson_push_results_async_recv(zmq_socket_push,sending)
 ! Activate is zmq_socket_push is a REQ
 IRP_IF ZMQ_PUSH
 IRP_ELSE
-  character*(2) :: ok
+  character*(256) :: ok
   rc = f77_zmq_recv( zmq_socket_push, ok, 2, 0)
   if ((rc /= 2).and.(ok(1:2)/='ok')) then
     print *, irp_here, ': f77_zmq_recv( zmq_socket_push, ok, 2, 0)'
+    print *,  rc
+    print *,  ok
     stop -1
   endif
 IRP_ENDIF
diff --git a/src/davidson/davidson_parallel_csf.irp.f b/src/davidson/davidson_parallel_csf.irp.f
index 6e32dc11..fe651b1d 100644
--- a/src/davidson/davidson_parallel_csf.irp.f
+++ b/src/davidson/davidson_parallel_csf.irp.f
@@ -193,7 +193,7 @@ subroutine davidson_csf_push_results(zmq_socket_push, v_t, imin, imax, task_id)
   rc = f77_zmq_send( zmq_socket_push, imax, 4, ZMQ_SNDMORE)
   if(rc /= 4) stop 'davidson_csf_push_results failed to push imax'
 
-  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, ZMQ_SNDMORE)
+  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, 0)
   if(rc8 /= 8_8*sz) stop 'davidson_csf_push_results failed to push vt'
 
 ! Activate is zmq_socket_push is a REQ
@@ -240,7 +240,7 @@ subroutine davidson_csf_push_results_async_send(zmq_socket_push, v_t, imin, imax
   rc = f77_zmq_send( zmq_socket_push, imax, 4, ZMQ_SNDMORE)
   if(rc /= 4) stop 'davidson_csf_push_results failed to push imax'
 
-  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, ZMQ_SNDMORE)
+  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, 0)
   if(rc8 /= 8_8*sz) stop 'davidson_csf_push_results failed to push vt'
 
 
diff --git a/src/davidson/davidson_parallel_nos2.irp.f b/src/davidson/davidson_parallel_nos2.irp.f
index c332281a..84cbe3af 100644
--- a/src/davidson/davidson_parallel_nos2.irp.f
+++ b/src/davidson/davidson_parallel_nos2.irp.f
@@ -193,7 +193,7 @@ subroutine davidson_nos2_push_results(zmq_socket_push, v_t, imin, imax, task_id)
   rc = f77_zmq_send( zmq_socket_push, imax, 4, ZMQ_SNDMORE)
   if(rc /= 4) stop 'davidson_nos2_push_results failed to push imax'
 
-  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, ZMQ_SNDMORE)
+  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, 0)
   if(rc8 /= 8_8*sz) stop 'davidson_nos2_push_results failed to push vt'
 
 ! Activate is zmq_socket_push is a REQ
@@ -240,7 +240,7 @@ subroutine davidson_nos2_push_results_async_send(zmq_socket_push, v_t, imin, ima
   rc = f77_zmq_send( zmq_socket_push, imax, 4, ZMQ_SNDMORE)
   if(rc /= 4) stop 'davidson_nos2_push_results failed to push imax'
 
-  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, ZMQ_SNDMORE)
+  rc8 = f77_zmq_send8( zmq_socket_push, v_t(1,imin), 8_8*sz, 0)
   if(rc8 /= 8_8*sz) stop 'davidson_nos2_push_results failed to push vt'