diff --git a/hooks/command b/hooks/command
index d0fb345..381ac95 100755
--- a/hooks/command
+++ b/hooks/command
@@ -35,7 +35,7 @@ if [[ -z ${files:-} ]] ; then
 fi
 
 echo "+++ Running shellcheck on ${#files[@]} files"
-if docker run --rm -v "$PWD:/mnt" koalaman/shellcheck "${files[@]}" ; then
+if docker run --rm -v "$PWD:/mnt" --workdir "/mnt" koalaman/shellcheck "${files[@]}" ; then
   echo "Files are ok ✅"
 else
   exit 1
diff --git a/tests/run.bats b/tests/run.bats
index 8907141..ce94da7 100644
--- a/tests/run.bats
+++ b/tests/run.bats
@@ -8,7 +8,7 @@ load '/usr/local/lib/bats/load.bash'
   export BUILDKITE_PLUGIN_SHELLCHECK_FILES_0="tests/testdata/test.sh"
 
   stub docker \
-    "run --rm -v $PWD:/mnt koalaman/shellcheck tests/testdata/test.sh : echo testing test.sh"
+    "run --rm -v $PWD:/mnt --workdir /mnt koalaman/shellcheck tests/testdata/test.sh : echo testing test.sh"
 
   run "$PWD/hooks/command"
 
@@ -24,7 +24,7 @@ load '/usr/local/lib/bats/load.bash'
   export BUILDKITE_PLUGIN_SHELLCHECK_FILES_2="missing"
 
   stub docker \
-    "run --rm -v $PWD:/mnt koalaman/shellcheck tests/testdata/test.sh tests/testdata/subdir/llamas.sh tests/testdata/subdir/shell\ with\ space.sh' : echo testing test.sh"
+    "run --rm -v $PWD:/mnt --workdir /mnt koalaman/shellcheck tests/testdata/test.sh tests/testdata/subdir/llamas.sh tests/testdata/subdir/shell\ with\ space.sh' : echo testing test.sh"
 
   run "$PWD/hooks/command"
 
@@ -38,7 +38,7 @@ load '/usr/local/lib/bats/load.bash'
   export BUILDKITE_PLUGIN_SHELLCHECK_FILES_0="tests/testdata/subdir/llamas.sh"
 
   stub docker \
-    "run --rm -v $PWD:/mnt koalaman/shellcheck tests/testdata/test.sh tests/testdata/subdir/llamas.sh tests/testdata/subdir/shell\ with\ space.sh' : echo shellcheck failed; exit 1"
+    "run --rm -v $PWD:/mnt --workdir /mnt koalaman/shellcheck tests/testdata/test.sh tests/testdata/subdir/llamas.sh tests/testdata/subdir/shell\ with\ space.sh' : echo shellcheck failed; exit 1"
 
   run "$PWD/hooks/command"