diff --git a/internal/manager/job_compilers/js_globals.go b/internal/manager/job_compilers/js_globals.go
index 2d36dd77..de9dddf9 100644
--- a/internal/manager/job_compilers/js_globals.go
+++ b/internal/manager/job_compilers/js_globals.go
@@ -41,7 +41,7 @@ type ErrInvalidRange struct {
 
 func (e ErrInvalidRange) Error() string {
 	if e.err != nil {
-		return fmt.Sprintf("invalid range \"%v\":  %s (%s)", e.Range, e.Message, e.Error())
+		return fmt.Sprintf("invalid range \"%v\":  %s (%s)", e.Range, e.Message, e.err.Error())
 	}
 	return fmt.Sprintf("invalid range \"%v\": %s", e.Range, e.Message)
 }
diff --git a/internal/manager/job_compilers/js_globals_test.go b/internal/manager/job_compilers/js_globals_test.go
index b0abb8c3..9ce7eb06 100644
--- a/internal/manager/job_compilers/js_globals_test.go
+++ b/internal/manager/job_compilers/js_globals_test.go
@@ -42,6 +42,12 @@ func TestFrameChunkerHappyExtraWhitespace(t *testing.T) {
 	assert.Equal(t, []string{"1-4", "5-8", "9,10,20,21", "22-25", "40"}, chunks)
 }
 
+func TestFrameChunkerUnhappy(t *testing.T) {
+	_, err := jsFrameChunker(" 1 10", 4)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "1 10")
+}
+
 func TestFrameRangeExplode(t *testing.T) {
 	frames, err := frameRangeExplode("1..10,20..25,40")
 	assert.NoError(t, err)