diff --git a/AutomatedTests/PascalString.c b/AutomatedTests/PascalString.c
index 15c825e063..0311510541 100644
--- a/AutomatedTests/PascalString.c
+++ b/AutomatedTests/PascalString.c
@@ -1,6 +1,6 @@
 #include "Test.h"
 
-int main()
+int main(void)
 {
     const unsigned char *pstr = "\pHello, world.";
     const char *cstr = "Hello, world.";