diff --git a/miasm/install b/miasm/install
index f73bfcf..e7d9954 100755
--- a/miasm/install
+++ b/miasm/install
@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/bin/bash -ex
 
 git clone --depth 1 https://github.com/serpilliere/elfesteem.git
 git clone --depth 1 https://github.com/cea-sec/miasm.git
diff --git a/miasm/install-root-debian b/miasm/install-root-debian
index 1bcf371..1453e56 100755
--- a/miasm/install-root-debian
+++ b/miasm/install-root-debian
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -ex
 
 apt-get install -y zlib zlib-dev libstdc++6-4.9-dev libstdc++6 \
     llvm-3.5 llvm--3.5-dev libedit libedit-dev
diff --git a/miasm/install-root-fedora b/miasm/install-root-fedora
index 547411d..3f1fc06 100755
--- a/miasm/install-root-fedora
+++ b/miasm/install-root-fedora
@@ -1,2 +1,4 @@
-#!/bin/bash
-dnf install -y zlib zlib-devel libstdc++-devel libstdc++ libstdc++-static llvm-3.5.0 llvm-devel-3.5.0 libedit libedit-devel
+#!/bin/bash -ex
+
+dnf install -y zlib zlib-devel libstdc++-devel libstdc++ libstdc++-static \
+    llvm-3.5.0 llvm-devel-3.5.0 libedit libedit-devel
diff --git a/rr/install b/rr/install
index 75fd7bc..8a7b128 100755
--- a/rr/install
+++ b/rr/install
@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/bin/bash -ex
 
 git clone https://github.com/mozilla/rr.git
 mkdir build
diff --git a/rr/install-root-archlinux b/rr/install-root-archlinux
index e4cca3b..429bd9c 100755
--- a/rr/install-root-archlinux
+++ b/rr/install-root-archlinux
@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/bin/bash -ex
+
 pacman -Syu --noconfirm --needed \
     ccache cmake gdb python2-pexpect ninja zlib
 ./configure-system
diff --git a/rr/install-root-debian b/rr/install-root-debian
index dad37c1..a0431f6 100755
--- a/rr/install-root-debian
+++ b/rr/install-root-debian
@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/bin/bash -ex
+
 apt-get install -y ccache cmake make g++-multilib gdb \
     pkg-config libz-dev realpath python-pexpect manpages-dev git zlib1g-dev \
     ninja-build
diff --git a/rr/install-root-fedora b/rr/install-root-fedora
index d897155..53d66ac 100755
--- a/rr/install-root-fedora
+++ b/rr/install-root-fedora
@@ -1,4 +1,5 @@
-#!/bin/bash -e
+#!/bin/bash -ex
+
 dnf install -y \
     ccache cmake make gcc gcc-c++ gdb \
     glibc-devel glibc-devel.i686 libstdc++-devel libstdc++-devel.i686 zlib-devel \