diff --git a/ref_vk/vk_render.c b/ref_vk/vk_render.c
index d2db9c8a..c010e1d3 100644
--- a/ref_vk/vk_render.c
+++ b/ref_vk/vk_render.c
@@ -476,7 +476,7 @@ static uint32_t allocUniform( uint32_t size, uint32_t alignment ) {
 	return offset;
 }
 
-static draw_command_t *drawCmdAlloc() {
+static draw_command_t *drawCmdAlloc( void ) {
 	ASSERT(g_render_state.num_draw_commands < ARRAYSIZE(g_render_state.draw_commands));
 	return g_render_state.draw_commands + (g_render_state.num_draw_commands++);
 }