diff --git a/src/output/OutputThread.cxx b/src/output/OutputThread.cxx
index 42a97b2bd..bb29e0ca3 100644
--- a/src/output/OutputThread.cxx
+++ b/src/output/OutputThread.cxx
@@ -284,7 +284,8 @@ AudioOutput::Reopen()
 {
 	assert(open);
 
-	if (!config_audio_format.IsFullyDefined()) {
+	if (request.audio_format != in_audio_format &&
+	    !config_audio_format.IsFullyDefined()) {
 		Close(true);
 		Open();
 	} else