diff --git a/src/fmt/doc.go b/src/fmt/doc.go
index 8b0c7d10af..f8ae4e72f9 100644
--- a/src/fmt/doc.go
+++ b/src/fmt/doc.go
@@ -51,7 +51,7 @@
 	The default format for %v is:
 		bool:                    %t
 		int, int8 etc.:          %d
-		uint, uint8 etc.:        %d, %x if printed with %#v
+		uint, uint8 etc.:        %d, %#x if printed with %#v
 		float32, complex64, etc: %g
 		string:                  %s
 		chan:                    %p