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-rw-r--r--src/emu/input.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/emu/input.cpp b/src/emu/input.cpp
index 1a5351c3c59..64aa4382c97 100644
--- a/src/emu/input.cpp
+++ b/src/emu/input.cpp
@@ -1483,7 +1483,7 @@ input_seq input_manager::seq_clean(const input_seq &seq) const
clean_index--;
}
}
- else if (clean_index > 0 || !code.internal())
+ else if (clean_index > 0 || !code.internal() || code == input_seq::not_code)
{
clean_codes += code;
clean_index++;