diff --git a/doc/changes/compositor/mr.358.md b/doc/changes/compositor/mr.358.md
new file mode 100644
index 000000000..e6d99ecff
--- /dev/null
+++ b/doc/changes/compositor/mr.358.md
@@ -0,0 +1 @@
+main: Include `<math.h>` in layers renderer for missing `tanf` function.
diff --git a/src/xrt/compositor/main/comp_layer_renderer.c b/src/xrt/compositor/main/comp_layer_renderer.c
index 0475a1ead..5abf110df 100644
--- a/src/xrt/compositor/main/comp_layer_renderer.c
+++ b/src/xrt/compositor/main/comp_layer_renderer.c
@@ -7,16 +7,17 @@
  * @ingroup comp_main
  */
 
-#include "comp_layer_renderer.h"
-
-#include <stdio.h>
-
 #include "util/u_misc.h"
 #include "math/m_api.h"
 
+#include "comp_layer_renderer.h"
+
 #include "shaders/quad.frag.h"
 #include "shaders/quad.vert.h"
 
+#include <stdio.h>
+#include <math.h>
+
 
 struct comp_layer_vertex
 {