diff --git a/build-cran-package.sh b/build-cran-package.sh
index 6558afcf77ad..1c8a5dfbdc48 100755
--- a/build-cran-package.sh
+++ b/build-cran-package.sh
@@ -132,7 +132,7 @@ cd "${TEMP_R_DIR}"
     using_windows_and_r3=$(
         Rscript -e 'cat(.Platform$OS.type == "windows" && R.version[["major"]] < 4)'
     )
-    if [[ ${using_windows_and_r3} == "TRUE" ]]; then
+    if test "${using_windows_and_r3}" = "TRUE"; then
         LGB_CXX_STD="C++11"
     fi
     sed -i.bak -e "s/~~CXXSTD~~/${LGB_CXX_STD}/" DESCRIPTION