diff --git a/src/hardware/iohandler.cpp b/src/hardware/iohandler.cpp
index 628a7361..6e2429eb 100644
--- a/src/hardware/iohandler.cpp
+++ b/src/hardware/iohandler.cpp
@@ -24,12 +24,12 @@ IO_WriteBlock IO_WriteTable[IO_MAX];
 
 void IO_Write(Bitu num,Bit8u val) {
 	if (num<IO_MAX) IO_WriteTable[num].handler(num,val);
-	else LOG(LOG_ALL,LOG_ERROR)("IO:Out or range write %X2 to port %4X",val,num);
+	else LOG(LOG_IO,LOG_WARN)("IO:Out or range write %X2 to port %4X",val,num);
 }
 
 Bit8u IO_Read(Bitu num) {
 	if (num<IO_MAX) return IO_ReadTable[num].handler(num);
-	else LOG(LOG_ALL,LOG_ERROR)("IO:Out or range read from port %4X",num);
+	else LOG(LOG_IO,LOG_WARN)("IO:Out or range read from port %4X",num);
 	return 0xff;
 }
 
@@ -42,13 +42,13 @@ static void IO_WriteBlocked(Bit32u port,Bit8u val) {
 }
 
 static Bit8u  IO_ReadDefault(Bit32u port) {
-	LOG(LOG_IO,LOG_ERROR)("Reading from undefined port %04X",port);
+	LOG(LOG_IO,LOG_WARN)("Reading from undefined port %04X",port);
 	IO_RegisterReadHandler(port,&IO_ReadBlocked,"Blocked Read");
 	return 0xff;	
 }
 
 void IO_WriteDefault(Bit32u port,Bit8u val) {
-	LOG(LOG_IO,LOG_ERROR)("Writing %02X to undefined port %04X",static_cast<Bit32u>(val),port);		
+	LOG(LOG_IO,LOG_WARN)("Writing %02X to undefined port %04X",static_cast<Bit32u>(val),port);		
 	IO_RegisterWriteHandler(port,&IO_WriteBlocked,"Blocked Write");
 }