diff --git a/moduler/programs.nix b/moduler/programs.nix
index 259a575..84dbe8a 100644
--- a/moduler/programs.nix
+++ b/moduler/programs.nix
@@ -27,7 +27,6 @@
     feishin
     signal-desktop
     thunderbird
-    libreoffice
     discord
     slack
     speedcrunch
@@ -36,7 +35,7 @@
     via
     drawio
     freecad-wayland
-    kdePackages.okular
+    evince
     angryipscanner
 	vlc
 
diff --git a/moduler/system.nix b/moduler/system.nix
index bce6d3c..5ece59c 100644
--- a/moduler/system.nix
+++ b/moduler/system.nix
@@ -58,7 +58,6 @@
 
     # system call monitoring
     strace # system call monitoring
-    ltrace # library call monitoring
     lsof # list open files
 
     # system tools