diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 3a3d7cc..06fe43b 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -3042,8 +3042,10 @@
 	48.058 The maximum power to be used is indicated in the BS and MS Power elements respectively. */
 	RSL.send(ts_RSL_MS_PWR_CTRL_with_pp(g_chan_nr, pwr_max_var));
 
-	/* wait, then check that our power level was reduced */
-	timer T1 := 10.0;
+	/* By default, the MS power loop gets triggered every 4th SACCH block (1.92s).
+	 * We need 9 * 4 dB steps to get from 0 dBm to 33 dBm, so 9 * 1.92s total.
+	 * Add an extra offset to avoid race conditions: +1.92s. */
+	timer T1 := 9.0 * 1.92 + 1.92;
 	T1.start;
 	alt {
 	[] as_l1_sacch_l1h(l1h) { repeat; }