1 files changed, 1 insertions, 1 deletions

diff --git a/src/character.c b/src/character.c
index 84eddeb2fc2..4087e8984d0 100644
--- a/src/character.c
+++ b/src/character.c
@@ -156,7 +156,7 @@ char_string (unsigned int c, unsigned char *p)
       bytes = BYTE8_STRING (c, p);
     }
   else
-    error ("Invalid character: %d", c);
+    error ("Invalid character: %x", c);
 
   return bytes;
 }