diff --git a/xlsx/xlsx_test.go b/xlsx/xlsx_test.go
index 5200d673..f2dfb768 100644
--- a/xlsx/xlsx_test.go
+++ b/xlsx/xlsx_test.go
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build !skipCi
+// +build !skipCi
 
 package xlsx