diff --git a/lib/common/tests/strings/crm_get_msec_test.c b/lib/common/tests/strings/crm_get_msec_test.c
index 5da548bddd..eaab704d5c 100644
--- a/lib/common/tests/strings/crm_get_msec_test.c
+++ b/lib/common/tests/strings/crm_get_msec_test.c
@@ -1,50 +1,68 @@
 /*
- * Copyright 2021 the Pacemaker project contributors
+ * Copyright 2021-2024 the Pacemaker project contributors
  *
  * The version control history for this file may have further details.
  *
  * This source code is licensed under the GNU General Public License version 2
  * or later (GPLv2+) WITHOUT ANY WARRANTY.
  */
 
 #include <crm_internal.h>
 
 #include <crm/common/unittest_internal.h>
 
 static void
 bad_input(void **state) {
     assert_int_equal(crm_get_msec(NULL), PCMK__PARSE_INT_DEFAULT);
     assert_int_equal(crm_get_msec("     "), PCMK__PARSE_INT_DEFAULT);
     assert_int_equal(crm_get_msec("abcxyz"), PCMK__PARSE_INT_DEFAULT);
     assert_int_equal(crm_get_msec("100xs"), PCMK__PARSE_INT_DEFAULT);
     assert_int_equal(crm_get_msec(" 100 xs "), PCMK__PARSE_INT_DEFAULT);
     assert_int_equal(crm_get_msec("-100ms"), PCMK__PARSE_INT_DEFAULT);
+
+    assert_int_equal(crm_get_msec("3.xs"), PCMK__PARSE_INT_DEFAULT);
+    assert_int_equal(crm_get_msec("  3.   xs  "), PCMK__PARSE_INT_DEFAULT);
+    assert_int_equal(crm_get_msec("3.14xs"), PCMK__PARSE_INT_DEFAULT);
+    assert_int_equal(crm_get_msec("  3.14  xs  "), PCMK__PARSE_INT_DEFAULT);
 }
 
 static void
 good_input(void **state) {
     assert_int_equal(crm_get_msec("100"), 100000);
     assert_int_equal(crm_get_msec(" 100 "), 100000);
     assert_int_equal(crm_get_msec("\t100\n"), 100000);
 
     assert_int_equal(crm_get_msec("100ms"), 100);
     assert_int_equal(crm_get_msec("100 MSEC"), 100);
     assert_int_equal(crm_get_msec("1000US"), 1);
     assert_int_equal(crm_get_msec("1000usec"), 1);
     assert_int_equal(crm_get_msec("12s"), 12000);
     assert_int_equal(crm_get_msec("12 sec"), 12000);
     assert_int_equal(crm_get_msec("1m"), 60000);
     assert_int_equal(crm_get_msec("13 min"), 780000);
     assert_int_equal(crm_get_msec("2\th"), 7200000);
     assert_int_equal(crm_get_msec("1 hr"), 3600000);
+
+    assert_int_equal(crm_get_msec("3."), 3000);
+    assert_int_equal(crm_get_msec("  3.  ms  "), 3);
+    assert_int_equal(crm_get_msec("3.14"), 3000);
+    assert_int_equal(crm_get_msec("  3.14  ms  "), 3);
+
+    // Questionable
+    assert_int_equal(crm_get_msec("3.14."), 3000);
+    assert_int_equal(crm_get_msec("  3.14.  ms  "), 3);
+    assert_int_equal(crm_get_msec("3.14.159"), 3000);
+    assert_int_equal(crm_get_msec("  3.14.159  "), 3000);
+    assert_int_equal(crm_get_msec("3.14.159ms"), 3);
+    assert_int_equal(crm_get_msec("  3.14.159  ms  "), 3);
 }
 
 static void
 overflow(void **state) {
     assert_int_equal(crm_get_msec("9223372036854775807s"), LLONG_MAX);
 }
 
 PCMK__UNIT_TEST(NULL, NULL,
                 cmocka_unit_test(bad_input),
                 cmocka_unit_test(good_input),
                 cmocka_unit_test(overflow))