diff --git a/test/built-ins/TypedArray/prototype/findLast/BigInt/predicate-call-changes-value.js b/test/built-ins/TypedArray/prototype/findLast/BigInt/predicate-call-changes-value.js
index bcb0c42798..7f9c6612c5 100644
--- a/test/built-ins/TypedArray/prototype/findLast/BigInt/predicate-call-changes-value.js
+++ b/test/built-ins/TypedArray/prototype/findLast/BigInt/predicate-call-changes-value.js
@@ -50,7 +50,7 @@ testWithBigIntTypedArrayConstructors(function(TA) {
 
   sample = new TA(arr);
   result = sample.findLast(function(val, i) {
-    if ( i <= 2 ) {
+    if ( i < 2 ) {
       sample[2] = 7n;
     }
     return val === 7n;
diff --git a/test/built-ins/TypedArray/prototype/findLast/BigInt/return-found-value-predicate-result-is-true.js b/test/built-ins/TypedArray/prototype/findLast/BigInt/return-found-value-predicate-result-is-true.js
index faad6a4696..f7319806b7 100644
--- a/test/built-ins/TypedArray/prototype/findLast/BigInt/return-found-value-predicate-result-is-true.js
+++ b/test/built-ins/TypedArray/prototype/findLast/BigInt/return-found-value-predicate-result-is-true.js
@@ -25,7 +25,7 @@ testWithBigIntTypedArrayConstructors(function(TA) {
     called++;
     return true;
   });
-  assert.sameValue(result, 62n, "returned true on sample[0]");
+  assert.sameValue(result, 62n, "returned true on sample[2]");
   assert.sameValue(called, 1, "predicate was called once");
 
   called = 0;
@@ -33,8 +33,8 @@ testWithBigIntTypedArrayConstructors(function(TA) {
     called++;
     return val === 62n;
   });
-  assert.sameValue(called, 1, "predicate was called three times");
-  assert.sameValue(result, 62n, "returned true on sample[3]");
+  assert.sameValue(called, 1, "predicate was called once");
+  assert.sameValue(result, 62n, "returned true on sample[2]");
 
   result = sample.findLast(function() { return "string"; });
   assert.sameValue(result, 62n, "ToBoolean(string)");
diff --git a/test/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js b/test/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js
index 9a7aef4b7f..e1cebb207b 100644
--- a/test/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js
+++ b/test/built-ins/TypedArray/prototype/findLast/predicate-call-changes-value.js
@@ -50,7 +50,7 @@ testWithTypedArrayConstructors(function(TA) {
 
   sample = new TA(arr);
   result = sample.findLast(function(val, i) {
-    if ( i <= 2 ) {
+    if ( i < 2 ) {
       sample[2] = 7;
     }
     return val === 7;
diff --git a/test/built-ins/TypedArray/prototype/findLast/return-found-value-predicate-result-is-true.js b/test/built-ins/TypedArray/prototype/findLast/return-found-value-predicate-result-is-true.js
index e01e854fee..759943c779 100644
--- a/test/built-ins/TypedArray/prototype/findLast/return-found-value-predicate-result-is-true.js
+++ b/test/built-ins/TypedArray/prototype/findLast/return-found-value-predicate-result-is-true.js
@@ -25,7 +25,7 @@ testWithTypedArrayConstructors(function(TA) {
     called++;
     return true;
   });
-  assert.sameValue(result, 62, "returned true on sample[0]");
+  assert.sameValue(result, 62, "returned true on sample[2]");
   assert.sameValue(called, 1, "predicate was called once");
 
   called = 0;
@@ -33,8 +33,8 @@ testWithTypedArrayConstructors(function(TA) {
     called++;
     return val === 62;
   });
-  assert.sameValue(called, 1, "predicate was called three times");
-  assert.sameValue(result, 62, "returned true on sample[3]");
+  assert.sameValue(called, 1, "predicate was called once");
+  assert.sameValue(result, 62, "returned true on sample[2]");
 
   result = sample.findLast(function() { return "string"; });
   assert.sameValue(result, 62, "ToBoolean(string)");
diff --git a/test/built-ins/TypedArray/prototype/findLastIndex/predicate-call-changes-value.js b/test/built-ins/TypedArray/prototype/findLastIndex/predicate-call-changes-value.js
index b30716b92a..b6dd047ad2 100644
--- a/test/built-ins/TypedArray/prototype/findLastIndex/predicate-call-changes-value.js
+++ b/test/built-ins/TypedArray/prototype/findLastIndex/predicate-call-changes-value.js
@@ -49,7 +49,7 @@ testWithTypedArrayConstructors(function(TA) {
 
   sample = new TA(arr);
   result = sample.findLastIndex(function(val, i) {
-    if ( i <= 2) {
+    if ( i < 2) {
       sample[2] = 7;
     }
     return val === 7;