diff --git a/src/looperclip.cxx b/src/looperclip.cxx
index e193c6a..5b70f75 100644
--- a/src/looperclip.cxx
+++ b/src/looperclip.cxx
@@ -430,9 +430,9 @@ void LooperClip::getSample(float playSpeed, float* L, float* R)
 
 		std::vector<float>& vL = _buffer->getDataL();
 		std::vector<float>& vR = _buffer->getDataR();
-		*L = vL.at(_playhead);
-		*R = vR.at(_playhead);
-		_playhead +=playSpeed;
+		*L = vL[_playhead];
+		*R = vR[_playhead];
+		_playhead += playSpeed;
 	} else {
 		*L = 0.f;
 		*R = 0.f;