diff --git a/vl.c b/vl.c
index dc792fe..2695842 100644
--- a/vl.c
+++ b/vl.c
@@ -3358,34 +3358,34 @@
 
                     sz = qemu_opt_get_size(opts, "maxmem", 0);
                     if (sz < ram_size) {
-                        fprintf(stderr, "qemu: invalid -m option value: maxmem "
-                                "(%" PRIu64 ") <= initial memory ("
-                                RAM_ADDR_FMT ")\n", sz, ram_size);
+                        error_report("invalid -m option value: maxmem "
+                                "(0x%" PRIx64 ") <= initial memory (0x"
+                                RAM_ADDR_FMT ")", sz, ram_size);
                         exit(EXIT_FAILURE);
                     }
 
                     slots = qemu_opt_get_number(opts, "slots", 0);
                     if ((sz > ram_size) && !slots) {
-                        fprintf(stderr, "qemu: invalid -m option value: maxmem "
-                                "(%" PRIu64 ") more than initial memory ("
+                        error_report("invalid -m option value: maxmem "
+                                "(0x%" PRIx64 ") more than initial memory (0x"
                                 RAM_ADDR_FMT ") but no hotplug slots where "
-                                "specified\n", sz, ram_size);
+                                "specified", sz, ram_size);
                         exit(EXIT_FAILURE);
                     }
 
                     if ((sz <= ram_size) && slots) {
-                        fprintf(stderr, "qemu: invalid -m option value:  %"
+                        error_report("invalid -m option value:  %"
                                 PRIu64 " hotplug slots where specified but "
-                                "maxmem (%" PRIu64 ") <= initial memory ("
-                                RAM_ADDR_FMT ")\n", slots, sz, ram_size);
+                                "maxmem (0x%" PRIx64 ") <= initial memory (0x"
+                                RAM_ADDR_FMT ")", slots, sz, ram_size);
                         exit(EXIT_FAILURE);
                     }
                     maxram_size = sz;
                     ram_slots = slots;
                 } else if ((!maxmem_str && slots_str) ||
                            (maxmem_str && !slots_str)) {
-                    fprintf(stderr, "qemu: invalid -m option value: missing "
-                            "'%s' option\n", slots_str ? "maxmem" : "slots");
+                    error_report("invalid -m option value: missing "
+                            "'%s' option", slots_str ? "maxmem" : "slots");
                     exit(EXIT_FAILURE);
                 }
                 break;