diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 1f964e022b..707dcc12a1 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -822,7 +822,14 @@ static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
 
     for (i = 0; i < 32; i++, wpnum++, addr += WPGROUP_SIZE) {
         assert(wpnum < sd->wpgrps_size);
-        if (addr < sd->size && test_bit(wpnum, sd->wp_groups)) {
+        if (addr >= sd->size) {
+            /*
+             * If the addresses of the last groups are outside the valid range,
+             * then the corresponding write protection bits shall be set to 0.
+             */
+            continue;
+        }
+        if (test_bit(wpnum, sd->wp_groups)) {
             ret |= (1 << i);
         }
     }