diff --git a/config/sample-docker.engine-core.ini b/config/sample-docker.engine-core.ini
index c2f9fbb4742ef86edc73690f22583a42460a9700..1d040fc72063ea072bf247cb63fc934a0739a869 100644
--- a/config/sample-docker.engine-core.ini
+++ b/config/sample-docker.engine-core.ini
@@ -41,7 +41,7 @@ soundsystem="alsa"
 # With 'alsa' you have to write the devicenames like 'default' to use the system default or 'hw:0' to use the 1st audio device directly.
 # With Pulse Audio and Jack => an non empty value means it is used
 # Devices with empty string are ignored and not used
-input_device_0="default"
+input_device_0=""
 input_device_1=""
 input_device_2=""
 input_device_3=""