diff --git a/colour.hpp b/colour.hpp
index 7d436108..75347c59 100644
--- a/colour.hpp
+++ b/colour.hpp
@@ -52,20 +52,32 @@ namespace util {
 
     template <typename T>
     struct util::coord::store<1,T,srgba<1,T>> {
-        union { struct { T r; }; T data[1]; };
+        union {
+            struct { T r; };
+            T data[1];
+        };
     };
     template <typename T>
     struct util::coord::store<2,T,srgba<2,T>> {
-        union { struct { T r, g; }; T data[2]; };
+        union {
+            struct { T r, g; };
+            T data[2];
+        };
     };
     template <typename T>
     struct util::coord::store<3,T,srgba<3,T>> {
-        union { struct { T r, g, b; }; T data[3]; };
+        union {
+            struct { T r, g, b; };
+            T data[3];
+        };
     };
 
     template <typename T>
     struct util::coord::store<4,T,srgba<4,T>> {
-        union { struct { T r, g, b, a; }; T data[4]; };
+        union {
+            struct { T r, g, b, a; };
+            T data[4];
+        };
     };
 
     template <size_t S, typename T> struct srgba : colour<S,T,srgba<S,T>> {