diff --git a/src/fio_cluster.cpp b/src/fio_cluster.cpp
index d0509b31..f698e3f2 100644
--- a/src/fio_cluster.cpp
+++ b/src/fio_cluster.cpp
@@ -353,7 +353,7 @@ static enum fio_q_status sec_queue(struct thread_data *td, struct io_u *io)
         {
             printf("+++ %s 0x%lx 0x%llx+%lx\n",
                 io->ddir == DDIR_READ ? "READ" : "WRITE",
-                (uint64_t)io, io->offset, io->xfer_buflen);
+                (uint64_t)io, io->offset, (uint64_t)io->xfer_buflen);
         }
     }
 
diff --git a/src/fio_sec_osd.cpp b/src/fio_sec_osd.cpp
index 3bb7fb32..c9a6cb6c 100644
--- a/src/fio_sec_osd.cpp
+++ b/src/fio_sec_osd.cpp
@@ -355,7 +355,7 @@ static int sec_getevents(struct thread_data *td, unsigned int min, unsigned int
         {
             if (reply.hdr.retval != io->xfer_buflen)
             {
-                fprintf(stderr, "Short read: retval = %ld instead of %lu\n", reply.hdr.retval, io->xfer_buflen);
+                fprintf(stderr, "Short read: retval = %ld instead of %lu\n", reply.hdr.retval, (uint64_t)io->xfer_buflen);
                 exit(1);
             }
             // Support bitmap
@@ -380,7 +380,7 @@ static int sec_getevents(struct thread_data *td, unsigned int min, unsigned int
         {
             if (reply.hdr.retval != io->xfer_buflen)
             {
-                fprintf(stderr, "Short write: retval = %ld instead of %lu\n", reply.hdr.retval, io->xfer_buflen);
+                fprintf(stderr, "Short write: retval = %ld instead of %lu\n", reply.hdr.retval, (uint64_t)io->xfer_buflen);
                 exit(1);
             }
         }