diff --git a/util/test/demos/d3d11/d3d11_byte_address_buffers.cpp b/util/test/demos/d3d11/d3d11_byte_address_buffers.cpp
index 27bdd89a5..997763821 100644
--- a/util/test/demos/d3d11/d3d11_byte_address_buffers.cpp
+++ b/util/test/demos/d3d11/d3d11_byte_address_buffers.cpp
@@ -45,7 +45,7 @@ void main()
 
 )EOSHADER";
 
-  int main(int argc, char **argv)
+  int main()
   {
     // initialise, create window, create device, etc
     if(!Init())
diff --git a/util/test/demos/d3d11/d3d11_debug_shader.cpp b/util/test/demos/d3d11/d3d11_debug_shader.cpp
index 8010ff5ce..63043179f 100644
--- a/util/test/demos/d3d11/d3d11_debug_shader.cpp
+++ b/util/test/demos/d3d11/d3d11_debug_shader.cpp
@@ -203,7 +203,7 @@ float4 main(v2f IN) : SV_Target0
 
 )EOSHADER";
 
-  int main(int argc, char **argv)
+  int main()
   {
     // initialise, create window, create device, etc
     if(!Init())