diff --git a/cmd/image-builder/main_test.go b/cmd/image-builder/main_test.go
index 5263de7..66ca06c 100644
--- a/cmd/image-builder/main_test.go
+++ b/cmd/image-builder/main_test.go
@@ -392,8 +392,8 @@ centos-9-qcow2-x86_64/centos-9-qcow2-x86_64.qcow2
 `)
 
 	// ensure osbuild was run exactly one
-	require.Equal(t, 1, len(fakeOsbuildCmd.Calls()))
-	osbuildCall := fakeOsbuildCmd.Calls()[0]
+	require.Equal(t, 1, len(fakeOsbuildCmd.CallArgsList()))
+	osbuildCall := fakeOsbuildCmd.CallArgsList()[0]
 	// --cache is passed correctly to osbuild
 	storePos := slices.Index(osbuildCall, "--store")
 	assert.True(t, storePos > -1)
@@ -470,7 +470,7 @@ func TestBuildIntegrationArgs(t *testing.T) {
 			require.NoError(t, err)
 
 			// ensure output dir override works
-			osbuildCall := fakeOsbuildCmd.Calls()[0]
+			osbuildCall := fakeOsbuildCmd.CallArgsList()[0]
 			outputDirPos := slices.Index(osbuildCall, "--output-directory")
 			assert.True(t, outputDirPos > -1)
 			assert.Equal(t, outputDir, osbuildCall[outputDirPos+1])
diff --git a/internal/testutil/testutil.go b/internal/testutil/testutil.go
index 65f2ff1..cfd83b5 100644
--- a/internal/testutil/testutil.go
+++ b/internal/testutil/testutil.go
@@ -41,7 +41,7 @@ func (mc *MockCmd) Path() string {
 	return filepath.Join(mc.binDir, mc.name)
 }
 
-func (mc *MockCmd) Calls() [][]string {
+func (mc *MockCmd) CallArgsList() [][]string {
 	b, err := os.ReadFile(mc.Path() + ".run")
 	if os.IsNotExist(err) {
 		return nil
@@ -49,15 +49,15 @@ func (mc *MockCmd) Calls() [][]string {
 	if err != nil {
 		panic(err)
 	}
-	var calls [][]string
+	var callArgsList [][]string
 	for _, line := range strings.Split(string(b), "\n") {
 		if line == "" {
 			continue
 		}
 		call := strings.Split(line, "\000")
-		calls = append(calls, call[0:len(call)-1])
+		callArgsList = append(callArgsList, call[0:len(call)-1])
 	}
-	return calls
+	return callArgsList
 }
 
 // CaptureStdio runs the given function f() in an environment that
diff --git a/internal/testutil/testutil_test.go b/internal/testutil/testutil_test.go
index 020baf0..b833696 100644
--- a/internal/testutil/testutil_test.go
+++ b/internal/testutil/testutil_test.go
@@ -22,7 +22,7 @@ func TestMockCommand(t *testing.T) {
 	assert.Equal(t, [][]string{
 		{"run1-arg1", "run1-arg2"},
 		{"run2-arg1", "run2-arg2"},
-	}, fakeCmd.Calls())
+	}, fakeCmd.CallArgsList())
 }
 
 func TestCaptureStdout(t *testing.T) {