diff --git a/audio/audio.go b/audio/audio.go
index 969f212d9..7c00578bc 100644
--- a/audio/audio.go
+++ b/audio/audio.go
@@ -240,7 +240,7 @@ func (c *Context) IsReady() bool {
 			// problematic when a user tries to play audio after the context is ready.
 			// Play a dummy player to avoid the blocking (#969).
 			// Use a long enough buffer so that writing doesn't finish immediately (#970).
-			p := NewPlayerFromBytes(c, make([]byte, bufferSize()*2))
+			p := NewPlayerFromBytes(c, make([]byte, 16384))
 			p.Play()
 		}()
 	})
diff --git a/audio/buffersize_mobile.go b/audio/buffersize_mobile.go
deleted file mode 100644
index 08c6d1539..000000000
--- a/audio/buffersize_mobile.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2018 The Ebiten Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//go:build android || ios
-
-package audio
-
-func bufferSize() int {
-	// From the experience of Daigo's games (e.g. Clock of Atonement),
-	// 8192 is not enough on mobile devices. Use x1.5 value.
-	return 12288
-}
diff --git a/audio/buffersize_notmobile.go b/audio/buffersize_notmobile.go
deleted file mode 100644
index ad04120b9..000000000
--- a/audio/buffersize_notmobile.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2018 The Ebiten Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//go:build !android && !ios
-
-package audio
-
-func bufferSize() int {
-	// On most desktop environments, 4096 [bytes] is enough
-	// but there are some known environment that is too short (e.g. Windows on Parallels).
-	return 8192
-}