diff --git a/gdk/gdkcolordefs.h b/gdk/gdkcolordefs.h
index b1d30b9af8..da02b7526e 100644
--- a/gdk/gdkcolordefs.h
+++ b/gdk/gdkcolordefs.h
@@ -99,7 +99,7 @@ hlg_eotf (float v)
   if (v <= 0.5)
     return (v * v) / 3;
   else
-    return expf (((v - c) / a) + b) / 12.0;
+    return (expf ((v - c) / a) + b) / 12.0;
 }
 
 static inline float
diff --git a/gdk/gdkcolorstate.c b/gdk/gdkcolorstate.c
index bdaca8eb57..6823faff62 100644
--- a/gdk/gdkcolorstate.c
+++ b/gdk/gdkcolorstate.c
@@ -632,13 +632,10 @@ gdk_color_state_new_for_cicp (const GdkCicp  *cicp,
       eotf = pq_eotf;
       oetf = pq_oetf;
       break;
-#if 0
-    /* round-trip tests for hlg are failing, for some reason */
     case 18:
       eotf = hlg_eotf;
       oetf = hlg_oetf;
       break;
-#endif
     default:
       g_set_error (error,
                    G_IO_ERROR, G_IO_ERROR_FAILED,