diff --git a/src/devices/cpu/mpk1839/kl1839vm1.h b/src/devices/cpu/mpk1839/kl1839vm1.h
index 4723dc89ffe..18b79ecbbb1 100644
--- a/src/devices/cpu/mpk1839/kl1839vm1.h
+++ b/src/devices/cpu/mpk1839/kl1839vm1.h
@@ -31,7 +31,7 @@ protected:
 	// device_execute_interface overrides
 	virtual u32 execute_min_cycles() const noexcept override { return 1; }
 	virtual u32 execute_max_cycles() const noexcept override { return 16; }
-	virtual u32 execute_input_lines() const noexcept override { return 1; }
+	virtual u32 execute_input_lines() const noexcept { return 1; }
 	virtual void execute_run() override;
 	virtual void execute_set_input(int inputnum, int state) override;