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-rw-r--r--src/emu/dioutput.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/emu/dioutput.c b/src/emu/dioutput.c
index 08f603b8af1..cf222f7a477 100644
--- a/src/emu/dioutput.c
+++ b/src/emu/dioutput.c
@@ -21,7 +21,7 @@
//-------------------------------------------------
device_output_interface::device_output_interface(const machine_config &mconfig, device_t &device) :
- device_interface(device),
+ device_interface(device, "output"),
m_output_index(0),
m_output_name(NULL)
{