diff --git a/kdf/disklist.h b/kdf/disklist.h
index 926ca36..fe22dbf 100644
--- a/kdf/disklist.h
+++ b/kdf/disklist.h
@@ -37,7 +37,7 @@
 
 #define DF_COMMAND    "df"
 // be pessimistic: df -T only works under linux !??
-#if defined(_OS_LINUX_)
+#if defined(_OS_LINUX_) || defined(__dilos__)
 #define DF_ARGS       "-kT"
 #define NO_FS_TYPE    false
 #else