1 files changed, 3 insertions, 2 deletions
diff --git a/vl.c b/vl.c
index ef6cfcec40..93795c1b9f 100644
--- a/vl.c
+++ b/vl.c
@@ -23,6 +23,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "qapi/error.h"
 #include "qemu-version.h"
 #include "qemu/cutils.h"
@@ -2808,8 +2809,8 @@ static void set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
         if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
             uint64_t overflow_check = sz;
 
-            sz <<= 20;
-            if ((sz >> 20) != overflow_check) {
+            sz *= MiB;
+            if (sz / MiB != overflow_check) {
                 error_report("too large 'size' option value");
                 exit(EXIT_FAILURE);
             }