diff --git a/src/devices/bus/cbus/mpu_pc98.cpp b/src/devices/bus/cbus/mpu_pc98.cpp
index 0f26fe4ac94..b669bb8769e 100644
--- a/src/devices/bus/cbus/mpu_pc98.cpp
+++ b/src/devices/bus/cbus/mpu_pc98.cpp
@@ -72,7 +72,7 @@ ADDRESS_MAP_END
 void mpu_pc98_device::device_start()
 {
 	address_space &iospace = machine().firstcpu->space(AS_IO);
-	iospace.install_device(0xe0d0, 0xe0d3, *this, map, 16, 0xffffffffffffffffU >> (64 - iospace.data_width()));
+	iospace.install_device(0xe0d0, 0xe0d3, *this, &mpu_pc98_device::map, 16, 0xffffffffffffffffU >> (64 - iospace.data_width()));
 }
 
 //-------------------------------------------------
diff --git a/src/devices/cpu/mcs40/mcs40.cpp b/src/devices/cpu/mcs40/mcs40.cpp
index 8efce9710ea..f8ee59f686c 100644
--- a/src/devices/cpu/mcs40/mcs40.cpp
+++ b/src/devices/cpu/mcs40/mcs40.cpp
@@ -96,7 +96,6 @@ mcs40_cpu_device_base::mcs40_cpu_device_base(
 	, m_cm_rom(0U), m_cm_ram(0U), m_cy(0U)
 	, m_pc(0U), m_pcbase(0U), m_genflags(0U)
 {
-	assert(!((1 & sp_mask) | sp_mask));
 	assert((16U == index_reg_cnt) || (24U == index_reg_cnt));
 }