diff --git a/src/mess/drivers/atarist.c b/src/mess/drivers/atarist.c
index 46ad6a90e95..a7b56d5dcc9 100644
--- a/src/mess/drivers/atarist.c
+++ b/src/mess/drivers/atarist.c
@@ -2453,7 +2453,7 @@ MACHINE_CONFIG_END
 //  MACHINE_CONFIG( tt030 )
 //-------------------------------------------------
 
-static MACHINE_CONFIG_DERIVED( tt030, st )
+static MACHINE_CONFIG_DERIVED( tt030, ste )
 MACHINE_CONFIG_END
 
 
@@ -2461,7 +2461,7 @@ MACHINE_CONFIG_END
 //  MACHINE_CONFIG( falcon )
 //-------------------------------------------------
 
-static MACHINE_CONFIG_DERIVED( falcon, st )
+static MACHINE_CONFIG_DERIVED( falcon, ste )
 MACHINE_CONFIG_END
 
 
@@ -2469,7 +2469,7 @@ MACHINE_CONFIG_END
 //  MACHINE_CONFIG( falcon40 )
 //-------------------------------------------------
 
-static MACHINE_CONFIG_DERIVED( falcon40, st )
+static MACHINE_CONFIG_DERIVED( falcon40, ste )
 MACHINE_CONFIG_END