diff --git a/.travis.yml b/.travis.yml
index 00353ed0fbd8646223d907f28fe5c641ad795b94..87a1032ff1a7cc6727a39620de06d684c6f59291 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,5 +10,5 @@ branches:
 
 script:
   - mntdir='/mnt/ocs-manager'
-  - docker run --rm -v $(pwd):${mntdir} ubuntu:14.04 /bin/bash -c "sh ${mntdir}/scripts/package ci_appimage"
+  - docker run --rm -v $(pwd):${mntdir} ubuntu:14.04 /bin/bash -c "${mntdir}/scripts/package ci_appimage"
   - cat transfer.log
diff --git a/pkg/appimage/appimagebuild b/pkg/appimage/appimagebuild
old mode 100644
new mode 100755
index 70d5f1b929f3917affa0edbe2b184c4cb6ff40ea..d9e03a9ed51270b2cdb02028790d218d3bb26373
--- a/pkg/appimage/appimagebuild
+++ b/pkg/appimage/appimagebuild
@@ -8,7 +8,7 @@ curl -fsSL -o linuxdeployqt.AppImage https://github.com/probonopd/linuxdeployqt/
 chmod 755 linuxdeployqt.AppImage
 ./linuxdeployqt.AppImage --appimage-extract
 
-sh scripts/prepare
+./scripts/prepare
 qmake PREFIX=/usr
 make
 make INSTALL_ROOT="${PKGNAME}.AppDir" install
diff --git a/scripts/package b/scripts/package
old mode 100644
new mode 100755
index f2031fc3c9dd9db8285fad21d29d68f86fe9b4f3..7038fc43a0d9d6947da8f0a33f7b94c1296e1946
--- a/scripts/package
+++ b/scripts/package
@@ -30,7 +30,7 @@ ci_appimage() { # docker-image: ubuntu:14.04
     useradd -m ${PKGUSER}
     chown -R ${PKGUSER} "${PROJDIR}"
 
-    su -c "export HOME=/home/${PKGUSER} && source /opt/qt59/bin/qt59-env.sh && sh "${PKGSCRIPT}" build_appimage" ${PKGUSER}
+    su -c "export HOME=/home/${PKGUSER} && source /opt/qt59/bin/qt59-env.sh && "${PKGSCRIPT}" build_appimage" ${PKGUSER}
 
     transfer_file "$(find "${BUILDDIR}" -type f -name "${PKGNAME}*.AppImage")"
 }
@@ -42,7 +42,7 @@ build_appimage() {
     tar -xzf "${BUILDDIR}/${PKGNAME}.tar.gz" -C "${BUILDDIR}"
     cp "${PROJDIR}/pkg/appimage/appimagebuild" "${BUILDDIR}/${PKGNAME}"
     cd "${BUILDDIR}/${PKGNAME}"
-    sh appimagebuild
+    ./appimagebuild
 }
 
 export_srcarchive() {
diff --git a/scripts/prepare b/scripts/prepare
old mode 100644
new mode 100755