diff --git a/.ci/setup.sh b/.ci/setup.sh
index 2e9d0ce3ec4..07e53f1cb50 100755
--- a/.ci/setup.sh
+++ b/.ci/setup.sh
@@ -11,7 +11,7 @@ cmake --build build --target testlightgbm -j4
 
 ls
 
-testlightgbm
+./testlightgbm
 
 # else  # Linux
 #     if type -f apt 2>&1 > /dev/null; then