1 files changed, 1 insertions, 1 deletions
diff --git a/colour.c b/colour.c
index b5efd6f1..82f8533a 100644
--- a/colour.c
+++ b/colour.c
@@ -147,7 +147,7 @@ colour_tostring(int c)
 	static char	s[32];
 
 	if (c & 0x100) {
-		xsnprintf(s, sizeof s, "colour%u", c & ~0x100);
+		xsnprintf(s, sizeof s, "colour%d", c & ~0x100);
 		return (s);
 	}