diff --git a/lib/instrument/visitors/eval.js b/lib/instrument/visitors/eval.js
index 1fe65450..c3acc889 100644
--- a/lib/instrument/visitors/eval.js
+++ b/lib/instrument/visitors/eval.js
@@ -127,7 +127,7 @@ function instrumentEvalCall(callNode, block, fn, isStrict, canUseSuper, superIsP
 
 			varNamesUsed.add(varName);
 
-			// Create array for var `[varName, isConst, isSilentConst, argNames]`.
+			// Create array for var `[varName, isConst, isSilentConst, argNames, tempVarValue]`.
 			// NB: Assignment to var called `arguments` or `eval` is illegal in strict mode.
 			// This is relevant as it affects whether var is flagged as mutable or not.
 			const isConst = binding.isConst || (isStrict && (varName === 'arguments' || varName === 'eval'));