diff --git a/power-assert/power-assert-tests.ts b/power-assert/power-assert-tests.ts
index 465e73afc0..e0fad71320 100644
--- a/power-assert/power-assert-tests.ts
+++ b/power-assert/power-assert-tests.ts
@@ -19,7 +19,7 @@ assert.throws(() => {
 }, undefined, "DODGED IT");
 
 assert.doesNotThrow(() => {
-    if (false) {
+    if (Math.random() < 0.5) {
         throw "a hammer at your face";
     }
 }, undefined, "What the...*crunch*");
@@ -44,7 +44,7 @@ customizedAssert1.throws(() => {
 }, undefined, "DODGED IT");
 
 customizedAssert1.doesNotThrow(() => {
-    if (false) {
+    if (Math.random() < 0.5) {
         throw "a hammer at your face";
     }
 }, undefined, "What the...*crunch*");