diff --git a/lib/instrument/modify.js b/lib/instrument/modify.js
index 891e65ba..fac09462 100644
--- a/lib/instrument/modify.js
+++ b/lib/instrument/modify.js
@@ -106,10 +106,10 @@ function modifyAst(ast, filename, isCommonJs, isStrict, sources, evalState) {
 	// Create program block
 	const programBlock = createAndEnterBlock(blockName, true, state);
 	state.programBlock = programBlock;
-	// TODO: If code is a script or in indirect `(0, eval)(...)`,
+	// TODO: If code is a script or in indirect `(0, eval)(...)` in sloppy mode,
 	// `var` declarations and function declarations (including async functions + generator functions)
 	// create globals, not local bindings.
-	// In direct `eval()` they create bindings in hoist block external to the `eval()`.
+	// In sloppy-mode direct `eval()` they create bindings in hoist block external to the `eval()`.
 	// So in both cases, there shouldn't be a hoist block.
 	state.currentHoistBlock = programBlock;