diff --git a/dpkg-frontend.sh b/dpkg-frontend.sh
index 7d514c2..4f7f391 100755
--- a/dpkg-frontend.sh
+++ b/dpkg-frontend.sh
@@ -30,9 +30,7 @@ Aptget="/usr/bin/apt-get"
 
 # Binaries entered in the list will be avalible to the script as variables with
 # the first letter uppercase
-Binaries=(dpkg sed awk egrep printf cat grep mktemp rm tail zenity)
-
-# Variables
+Binaries=(dpkg awk egrep printf tail zenity)
 
 
 ### Functions ###
@@ -150,6 +148,14 @@ choice_dialog()
 	fi
 }
 
+# Sanity checks
+for bin in $Which $Aptget; do
+	if [ ! -x $bin ]; then
+		echo "Can't execute $bin"
+		exit 1
+	fi
+done
+
 # Create variables with absolute path to binaries and check
 # if we can execute it (binaries will be avaliable in 
 # variables with first character uppercase, such as Grep)