diff --git a/tests/run-test.sh b/tests/run-test.sh
index 8559aa7a2..0e1a7624c 100755
--- a/tests/run-test.sh
+++ b/tests/run-test.sh
@@ -19,7 +19,7 @@ set -euo pipefail
 
 function fail()
 {
-  sed -n '/^#$/,/^$/p' "${BASH_SOURCE[0]}"
+  sed -n "/^#$/,/^$/p" "${BASH_SOURCE[0]}"
   echo "$1"
   exit 1
 }
@@ -28,7 +28,7 @@ SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 
 PYTEST=$(command -v "pytest-3" || command -v "pytest") || fail "pytest is missing"
 
-BUILDDIR=${BUILDDIR:-$(find "${SCRIPT_DIR}/.." -maxdepth 2 -name 'build.ninja' -printf "%h\n" -quit)}
+BUILDDIR=${BUILDDIR:-$(find "${SCRIPT_DIR}/.." -maxdepth 2 -name "build.ninja" -printf "%h\n" -quit)}
 
 [ ! -f "${BUILDDIR}/build.ninja" ] && fail "Path '${BUILDDIR}' does not appear to be a build dir"