diff --git a/src/dyad/dtl/flux_dtl.c b/src/dyad/dtl/flux_dtl.c
index 80c7aeda..a26f1503 100644
--- a/src/dyad/dtl/flux_dtl.c
+++ b/src/dyad/dtl/flux_dtl.c
@@ -162,7 +162,7 @@ dyad_rc_t dyad_dtl_flux_send (const dyad_ctx_t* ctx, void* buf, size_t buflen)
     rc = flux_respond_raw (ctx->dtl_handle->private_dtl.flux_dtl_handle->h,
                            ctx->dtl_handle->private_dtl.flux_dtl_handle->msg,
                            buf,
-                           (int)buflen);
+                           buflen);
     if (FLUX_IS_ERROR (rc)) {
         DYAD_LOG_ERROR (ctx,
                       "Could not send Flux RPC response containing file "
@@ -196,8 +196,8 @@ dyad_rc_t dyad_dtl_flux_recv (const dyad_ctx_t* ctx, void** buf, size_t* buflen)
         goto finish_recv;
     }
     void* tmp_buf;
-    int tmp_buflen = 0;
-    rc = flux_rpc_get_raw (dtl_handle->f, (const void**)&tmp_buf, (int*)&tmp_buflen);
+    size_t tmp_buflen = 0;
+    rc = flux_rpc_get_raw (dtl_handle->f, (const void**)&tmp_buf, &tmp_buflen);
     if (FLUX_IS_ERROR (rc)) {
         DYAD_LOG_ERROR (ctx, "Could not get file data from Flux RPC");
         if (errno == ENODATA)
@@ -206,7 +206,7 @@ dyad_rc_t dyad_dtl_flux_recv (const dyad_ctx_t* ctx, void** buf, size_t* buflen)
             dyad_rc = DYAD_RC_BADRPC;
         goto finish_recv;
     }
-    *buflen = (size_t) tmp_buflen;
+    *buflen = tmp_buflen;
     dyad_rc = ctx->dtl_handle->get_buffer (ctx, *buflen, buf);
     if (DYAD_IS_ERROR (dyad_rc)) {
         *buf = NULL;
diff --git a/tests/modules/compute.c b/tests/modules/compute.c
index 5ba4efc2..38e1ff5b 100644
--- a/tests/modules/compute.c
+++ b/tests/modules/compute.c
@@ -138,12 +138,12 @@ int main (int argc, char **argv)
 
     // Extract the data from reply
     const char *file_data = NULL;
-    int file_len = 0;
+    size_t file_len = 0;
     if (flux_rpc_get_raw (f2, (const void **)&file_data, &file_len) < 0) {
         flux_log_error (h, "flux_rpc_get_raw(\"%s\") failed.\n", file_name);
         goto done;
     }
-    fprintf (df, "Consumer file size: %d\n", file_len);
+    fprintf (df, "Consumer file size: %zu\n", file_len);
 
     // Set output file path
     char file_path[PATH_MAX + 1] = {'\0'};
@@ -167,7 +167,7 @@ int main (int argc, char **argv)
         fprintf (df, "Could not write file: %s\n", file_path);
         goto done;
     }
-    fwrite (file_data, sizeof (char), (size_t)file_len, of);
+    fwrite (file_data, sizeof (char), file_len, of);
     fclose (of);
 
     flux_future_destroy (f2);