diff --git a/services/modals/src/tests.rs b/services/modals/src/tests.rs
index b09e9c39b..73936da96 100644
--- a/services/modals/src/tests.rs
+++ b/services/modals/src/tests.rs
@@ -11,6 +11,7 @@ use xous_names::XousNames;
 use super::*;
 
 const RADIO_TEST: [&'static str; 4] = ["zebra", "cow", "horse", "cat"];
+const TEST_LOC: u32 = 0x01D8_0000; // this is PDDB_LOC from the precursor hardware config, chosen for "accurate" test case
 
 const CHECKBOX_TEST: [&'static str; 5] =
     ["happy", "😃", "安", "peace &\n tranquility", "Once apon a time, in a land far far away, there was a"];
@@ -47,14 +48,9 @@ pub fn spawn_test() {
             // The start and end items are deliberately structured to be not zero-indexed; the use of PDDB_LOC
             // is just a convenient global constant.
             modals
-                .start_progress(
-                    "Progress Quest",
-                    xous::PDDB_LOC,
-                    xous::PDDB_LOC + 64 * 1024 * 128,
-                    xous::PDDB_LOC,
-                )
+                .start_progress("Progress Quest", TEST_LOC, TEST_LOC + 64 * 1024 * 128, TEST_LOC)
                 .expect("couldn't raise progress bar");
-            for i in (xous::PDDB_LOC..xous::PDDB_LOC + 64 * 1024 * 128).step_by(64 * 1024 * 16) {
+            for i in (TEST_LOC..TEST_LOC + 64 * 1024 * 128).step_by(64 * 1024 * 16) {
                 modals.update_progress(i).expect("couldn't update progress bar");
                 tt.sleep_ms(100).unwrap();
             }