diff --git a/asm/parser.c b/asm/parser.c
index 80d8c050..1dbb29d2 100644
--- a/asm/parser.c
+++ b/asm/parser.c
@@ -1093,7 +1093,7 @@ insn *parse_line(char *buffer, insn *result)
                 i = tokval.t_type;
             }
             if (!recover && i != 0 && i != ',') {
-                nasm_nonfatal("comma, decorator or end of line expected, got %d", i);
+                nasm_nonfatal("comma, decorator or end of line expected, got %c", i);
                 recover = true;
             }
         } else {                /* immediate operand */