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-rw-r--r--src/devices/cpu/nec/nec.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/cpu/nec/nec.cpp b/src/devices/cpu/nec/nec.cpp
index 7b282e2570c..42ef74df7d5 100644
--- a/src/devices/cpu/nec/nec.cpp
+++ b/src/devices/cpu/nec/nec.cpp
@@ -437,7 +437,7 @@ void nec_common_device::device_start()
m_icountptr = &m_icount;
}
-void nec_common_device::state_string_export(const device_state_entry &entry, std::string &str)
+void nec_common_device::state_string_export(const device_state_entry &entry, std::string &str) const
{
UINT16 flags = CompressFlags();