diff --git a/mozilla/gfx/cairo/libpixman/src/fbcompose.c b/mozilla/gfx/cairo/libpixman/src/fbcompose.c
index 13164e2b8f7..cf24c23df98 100644
--- a/mozilla/gfx/cairo/libpixman/src/fbcompose.c
+++ b/mozilla/gfx/cairo/libpixman/src/fbcompose.c
@@ -37,12 +37,12 @@
 #define _USE_MATH_DEFINES
 #endif
 
+#include <math.h>
+
 #ifndef M_PI
 #define M_PI 3.14159265358979323846
 #endif
 
-#include <math.h>
-
 // #define PIXMAN_CONVOLUTION
 // #define PIXMAN_INDEXED_FORMATS