diff --git a/src/cairoint.h b/src/cairoint.h
index 07ced422d..5bca00389 100644
--- a/src/cairoint.h
+++ b/src/cairoint.h
@@ -229,7 +229,7 @@ be16_to_cpu(uint16_t v)
 static inline uint32_t cairo_const
 cpu_to_be32(uint32_t v)
 {
-    return (cpu_to_be16 (v) << 16) | cpu_to_be16 (v >> 16);
+    return (v >> 24) | ((v >> 8) & 0xff00) | ((v << 8) & 0xff0000) | (v << 24);
 }
 
 static inline uint32_t cairo_const