diff --git a/contrib/check_codestyle.sh b/contrib/check_codestyle.sh
index 90ee421d97..d3544e058c 100644
--- a/contrib/check_codestyle.sh
+++ b/contrib/check_codestyle.sh
@@ -21,7 +21,7 @@ done
 
 declare -A multiLineRegexChecks=(
     ["TC_LOG_[^;]+GetCounter"]="Use ObjectGuid::ToString().c_str() method instead of ObjectGuid::GetCounter() when logging. Check the lines above"
-    ["\n\n\n"]="Multiple blank lines detected, keep only one. Check the files above"
+    ["\r?\n\r?\n\r?\n"]="Multiple blank lines detected, keep only one. Check the files above"
 )
 for check in ${!multiLineRegexChecks[@]}; do
     echo "  Checking RegEx: '${check}'"