diff --git a/apps/rep/app.js b/apps/rep/app.js
index 692164cc3..a30a96c09 100644
--- a/apps/rep/app.js
+++ b/apps/rep/app.js
@@ -184,7 +184,7 @@ var _a, _b, _c;
         State.prototype.currentRepIndex = function () {
             var elapsed = this.getElapsedTotal();
             var ent;
-            for (var i = 0; ent = reps_1[i]; i++)
+            for (var i = 0; (ent = reps_1[i]); i++)
                 if (elapsed < ent.accDur)
                     return i;
             return null;
diff --git a/apps/rep/app.ts b/apps/rep/app.ts
index d34e2bca1..d1dd67179 100644
--- a/apps/rep/app.ts
+++ b/apps/rep/app.ts
@@ -233,7 +233,7 @@ class State {
 	currentRepIndex() {
 		const elapsed = this.getElapsedTotal();
 		let ent;
-		for(let i = 0; ent = reps[i]; i++)
+		for(let i = 0; (ent = reps[i]); i++)
 			if(elapsed < ent.accDur)
 				return i;
 		return null;