diff --git a/pptx_test/pptx_test.go b/pptx_test/pptx_test.go
index b936e3f..939f244 100644
--- a/pptx_test/pptx_test.go
+++ b/pptx_test/pptx_test.go
@@ -10,6 +10,9 @@ import (
 
 func TestConvertPptx(t *testing.T) {
 	f, err := os.Open("./testdata/sample.pptx")
+	if err != nil {
+		t.Fatal(err)
+	}
 	defer f.Close()
 
 	if err != nil {