diff --git a/test/run-tests.sh b/test/run-tests.sh
index b8280df7b..5db34379f 100644
--- a/test/run-tests.sh
+++ b/test/run-tests.sh
@@ -53,11 +53,13 @@ PrintHeader()
 PrintHelp()
 {
 	echo "$HelpColour"
-	echo "----------------------------------------------------------------------------"
-	echo " Syntax       : ./runtests.sh <C++ Standard> <Optimisation>                 "
-	echo " C++ Standard : 11, 14, 17 or 20                                            "
-	echo " Optimisation : 0, 1, 2 or 3. Default = 0                                   "
-	echo "----------------------------------------------------------------------------"
+	echo "----------------------------------------------------------------------------------"
+	echo " Syntax       : ./runtests.sh <C++ Standard> <Threads> <Optimisation> <Sanitizer> "
+	echo " C++ Standard : 11, 14, 17 or 20                                                  "
+	echo " Threads      : Number of threads to use. Default = 4                             "
+	echo " Optimisation : 0, 1, 2 or 3. Default = 0                                         "
+	echo " Sanitizer    : S enables sanitizer checks. Default disabled                      "
+	echo "----------------------------------------------------------------------------------"
 	echo "$NoColour"
 }