diff --git a/src/lang/slovenian.txt b/src/lang/slovenian.txt
index 828fc08f36..52dab940bd 100644
--- a/src/lang/slovenian.txt
+++ b/src/lang/slovenian.txt
@@ -2,7 +2,7 @@
 ##ownname Slovenščina
 ##isocode sl_SL
 ##plural 8
-##case r d t
+##case r d t 3sk
 
 ##id 0x0000
 STR_NULL                                                        :