diff --git a/bin/epitest b/bin/epitest
index e28648b..d45992e 100755
--- a/bin/epitest
+++ b/bin/epitest
@@ -1,4 +1,5 @@
 #!/usr/bin/bash
+set -e
 
 if [ "$EUID" -ne 0 ]; then
     echo "error: you cannot perform this operation unless you are root."
diff --git a/bin/mouse_360 b/bin/mouse_360
index 97dbf85..34c5510 100755
--- a/bin/mouse_360
+++ b/bin/mouse_360
@@ -1,4 +1,5 @@
 #!/usr/bin/bash
+set -e
 
 # counts target = 8182 ~ 25cm
 
diff --git a/bin/toggle-touchpad b/bin/toggle-touchpad
index b03e5da..75eceec 100755
--- a/bin/toggle-touchpad
+++ b/bin/toggle-touchpad
@@ -1,4 +1,5 @@
 #!/usr/bin/bash
+set -e
 
 device="PNP0C50:0e 06CB:7E7E Touchpad"
 
diff --git a/bin/virt-manager-launcher b/bin/virt-manager-launcher
index 8f5518f..7ec1d2b 100755
--- a/bin/virt-manager-launcher
+++ b/bin/virt-manager-launcher
@@ -1,5 +1,4 @@
 #!/usr/bin/bash
-
 set -e
 
 if [ "$EUID" -eq 0 ]; then