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-rw-r--r--src/devices/cpu/i4004/i4004.cpp2
-rw-r--r--src/devices/cpu/i4004/i4004.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/devices/cpu/i4004/i4004.cpp b/src/devices/cpu/i4004/i4004.cpp
index 62a4f9efbca..d4ba8891260 100644
--- a/src/devices/cpu/i4004/i4004.cpp
+++ b/src/devices/cpu/i4004/i4004.cpp
@@ -506,7 +506,7 @@ void i4004_cpu_device::state_export(const device_state_entry &entry)
}
}
-void i4004_cpu_device::state_string_export(const device_state_entry &entry, std::string &str)
+void i4004_cpu_device::state_string_export(const device_state_entry &entry, std::string &str) const
{
switch (entry.index())
{
diff --git a/src/devices/cpu/i4004/i4004.h b/src/devices/cpu/i4004/i4004.h
index 3bdc7cddcfd..fd60a9a5d10 100644
--- a/src/devices/cpu/i4004/i4004.h
+++ b/src/devices/cpu/i4004/i4004.h
@@ -57,7 +57,7 @@ protected:
// device_state_interface overrides
virtual void state_import(const device_state_entry &entry) override;
virtual void state_export(const device_state_entry &entry) override;
- virtual void state_string_export(const device_state_entry &entry, std::string &str) override;
+ virtual void state_string_export(const device_state_entry &entry, std::string &str) const override;
// device_disasm_interface overrides
virtual UINT32 disasm_min_opcode_bytes() const override { return 1; }