diff --git a/ci/install_dart_latest.sh b/ci/install_dart_latest.sh
index b589f9b3..c4e40b4c 100755
--- a/ci/install_dart_latest.sh
+++ b/ci/install_dart_latest.sh
@@ -1,3 +1,5 @@
+set -e
+
 # Select Compiler
 if [ "$COMPILER" = "gcc" ]; then
 export CC=/usr/bin/gcc && export CXX=/usr/bin/g++
diff --git a/ci/install_magnum.sh b/ci/install_magnum.sh
index 9acb1b2d..3098b6fd 100755
--- a/ci/install_magnum.sh
+++ b/ci/install_magnum.sh
@@ -1,3 +1,5 @@
+set -e
+
 # Select Compiler
 if [ "$COMPILER" = "gcc" ]; then
 export CC=/usr/bin/gcc && export CXX=/usr/bin/g++
diff --git a/ci/install_packages.sh b/ci/install_packages.sh
index 450d39ea..df2f538a 100755
--- a/ci/install_packages.sh
+++ b/ci/install_packages.sh
@@ -1,3 +1,5 @@
+set -e
+
 sudo apt-get -qq update
 sudo apt-get -y install software-properties-common mlocate
 sudo apt-add-repository -y ppa:dartsim/ppa
diff --git a/scripts/install_osx.sh b/scripts/install_osx.sh
index c3a37c42..edadf97d 100755
--- a/scripts/install_osx.sh
+++ b/scripts/install_osx.sh
@@ -1,4 +1,4 @@
-set -x
+set -e
 
 CLEAN=0
 
diff --git a/scripts/install_ubuntu.sh b/scripts/install_ubuntu.sh
index fa247e5b..bda58b6a 100755
--- a/scripts/install_ubuntu.sh
+++ b/scripts/install_ubuntu.sh
@@ -1,3 +1,5 @@
+set -e
+
 CLEAN=0
 
 CLEAN=${1:-$CLEAN}