--- render/picture.c.orig	2020-08-25 12:39:55.000000000 -0300
+++ render/picture.c	2020-12-03 09:50:58.999827000 -0300
@@ -527,12 +527,12 @@
                     return format;
             }
             else {
-                if (format->direct.redMask << format->direct.red ==
-                    pVisual->redMask &&
-                    format->direct.greenMask << format->direct.green ==
-                    pVisual->greenMask &&
-                    format->direct.blueMask << format->direct.blue ==
-                    pVisual->blueMask) {
+                if ((unsigned long)format->direct.redMask <<
+                        format->direct.red == pVisual->redMask &&
+                    (unsigned long)format->direct.greenMask <<
+                        format->direct.green == pVisual->greenMask &&
+                    (unsigned long)format->direct.blueMask <<
+                        format->direct.blue == pVisual->blueMask) {
                     return format;
                 }
             }