diff --git a/src/basic/user-util.c b/src/basic/user-util.c
index 2e3580017d..2db8ef6abf 100644
--- a/src/basic/user-util.c
+++ b/src/basic/user-util.c
@@ -49,7 +49,7 @@ int parse_uid(const char *s, uid_t *ret) {
         assert(s);
 
         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
-        r = safe_atou32(s, &uid);
+        r = safe_atou32_full(s, 10, &uid);
         if (r < 0)
                 return r;
 
diff --git a/src/test/test-user-util.c b/src/test/test-user-util.c
index a0e1495186..3165232fef 100644
--- a/src/test/test-user-util.c
+++ b/src/test/test-user-util.c
@@ -48,9 +48,19 @@ static void test_parse_uid(void) {
 
         r = parse_uid("65535", &uid);
         assert_se(r == -ENXIO);
+        assert_se(uid == 100);
+
+        r = parse_uid("0x1234", &uid);
+        assert_se(r == -EINVAL);
+        assert_se(uid == 100);
+
+        r = parse_uid("01234", &uid);
+        assert_se(r == 0);
+        assert_se(uid == 1234);
 
         r = parse_uid("asdsdas", &uid);
         assert_se(r == -EINVAL);
+        assert_se(uid == 1234);
 }
 
 static void test_uid_ptr(void) {