diff --git a/src/lang/turkish.txt b/src/lang/turkish.txt
index e593759e9a..e1afd22cc8 100644
--- a/src/lang/turkish.txt
+++ b/src/lang/turkish.txt
@@ -7,6 +7,7 @@
 ##digitsepcur .
 ##winlangid 0x041f
 ##grflangid 0x3e
+##case tamlanan
 
 #