diff --git a/install-php-extensions b/install-php-extensions
index fafaa1a..65e5f22 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -320,7 +320,7 @@ getPackageSource () {
 	getPackageSource_outDir=''
 	for getPackageSource_i in $(ls "${getPackageSource_tempDir}")
 	do
-		if test -n "${getPackageSource_outDir}" -o -f "${getPackageSource_tempDir}/${getPackageSource_i}"
+		if test -n "${getPackageSource_outDir}" || test -f "${getPackageSource_tempDir}/${getPackageSource_i}"
 		then
 			getPackageSource_outDir=''
 			break
diff --git a/scripts/travisci-update-readme b/scripts/travisci-update-readme
index fac1ec1..5ee9174 100755
--- a/scripts/travisci-update-readme
+++ b/scripts/travisci-update-readme
@@ -11,7 +11,7 @@ WATCHED_FILES='data/special-requirements data/supported-extensions scripts/commo
 
 
 echo 'Checking environment'
-if test -z "${TRAVIS_BUILD_DIR:-}" -o -z "${TRAVIS_BRANCH:-}" -o -z "${TRAVIS_EVENT_TYPE:-}" -o -z "${TRAVIS_REPO_SLUG:-}"
+if test -z "${TRAVIS_BUILD_DIR:-}" || test -z "${TRAVIS_BRANCH:-}" || test -z "${TRAVIS_EVENT_TYPE:-}" || test -z "${TRAVIS_REPO_SLUG:-}"
 then
 	echo 'Not in a TravisCI environment' >&2
 	exit 1
diff --git a/scripts/update-readme b/scripts/update-readme
index b201308..8752481 100755
--- a/scripts/update-readme
+++ b/scripts/update-readme
@@ -203,7 +203,7 @@ generateReadme () {
 	generateReadme_skip=''
 	while IFS= read -r generateReadme_line
 	do
-		if test "${generateReadme_line}" = "${generateReadme_ph_ExtensionsEnd}" -o "${generateReadme_line}" = "${generateReadme_ph_SpecialEnd}"
+		if test "${generateReadme_line}" = "${generateReadme_ph_ExtensionsEnd}" || test "${generateReadme_line}" = "${generateReadme_ph_SpecialEnd}"
 		then
 			generateReadme_skip=''
 		fi