diff --git a/samples/client.c b/samples/client.c
index e8b737f..7e6721f 100644
--- a/samples/client.c
+++ b/samples/client.c
@@ -821,7 +821,8 @@
     uint64_t bitmap_size = get_bitmap_size(dma_region->map.size,
                                            sysconf(_SC_PAGESIZE));
 
-    size_t size = sizeof(*res) + sizeof(*report) + bitmap_size;
+    /* Saturating add to keep coverity happy. */
+    size_t size = satadd_u64(sizeof(*res) + sizeof(*report), bitmap_size);
 
     void *data = calloc(1, size);
     assert(data != NULL);