diff --git a/libs/audio/source/effect/echo.cpp b/libs/audio/source/effect/echo.cpp
index 26155c84..e34748d0 100644
--- a/libs/audio/source/effect/echo.cpp
+++ b/libs/audio/source/effect/echo.cpp
@@ -13,7 +13,7 @@ namespace psemek::audio
 		{
 			echo_impl(stream_ptr stream, duration delay, float gain)
 				: stream_(std::move(stream))
-				, buffer_(2 * std::max(1l, delay.samples()), 0.f)
+				, buffer_(std::max(2l, delay.samples()), 0.f)
 				, gain_(gain)
 			{}