diff --git a/themes/slate-DE/trs-80/systeminfo.xml b/themes/slate-DE/trs-80/systeminfo.xml
index ff8a7c006..02f05c58b 100644
--- a/themes/slate-DE/trs-80/systeminfo.xml
+++ b/themes/slate-DE/trs-80/systeminfo.xml
@@ -7,7 +7,7 @@
             <text>Released:  1977</text>
         </text>
         <text name="info3">
-            <text>OS:  TRSDOS / LDOS / NewDos/80</text>
+            <text>OS:  TRSDOS, LDOS, NewDos/80</text>
         </text>
         <text name="info4">
             <text>Units sold:  2.4 million</text>