diff --git a/migration/migration.c b/migration/migration.c
index feb5ab7493..232e387109 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2056,7 +2056,7 @@ static int postcopy_start(MigrationState *ms)
     QIOChannelBuffer *bioc;
     QEMUFile *fb;
     int64_t time_at_stop = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
-    int64_t bandwidth = migrate_max_postcopy_bandwidth();
+    uint64_t bandwidth = migrate_max_postcopy_bandwidth();
     bool restart_block = false;
     int cur_state = MIGRATION_STATUS_ACTIVE;
 
@@ -3176,7 +3176,7 @@ fail:
 void migrate_fd_connect(MigrationState *s, Error *error_in)
 {
     Error *local_err = NULL;
-    int64_t rate_limit;
+    uint64_t rate_limit;
     bool resume = s->state == MIGRATION_STATUS_POSTCOPY_PAUSED;
 
     /*
diff --git a/migration/options.c b/migration/options.c
index 7395787960..2e759cc306 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -717,7 +717,7 @@ uint64_t migrate_max_bandwidth(void)
     return s->parameters.max_bandwidth;
 }
 
-int64_t migrate_max_postcopy_bandwidth(void)
+uint64_t migrate_max_postcopy_bandwidth(void)
 {
     MigrationState *s = migrate_get_current();
 
diff --git a/migration/options.h b/migration/options.h
index 09841d6a63..5cca3326d6 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -85,7 +85,7 @@ int migrate_decompress_threads(void);
 uint64_t migrate_downtime_limit(void);
 uint8_t migrate_max_cpu_throttle(void);
 uint64_t migrate_max_bandwidth(void);
-int64_t migrate_max_postcopy_bandwidth(void);
+uint64_t migrate_max_postcopy_bandwidth(void);
 int migrate_multifd_channels(void);
 MultiFDCompression migrate_multifd_compression(void);
 int migrate_multifd_zlib_level(void);