diff --git a/doc/qmdoc.1.md b/doc/qmdoc.1.md
index c2aa7c7..dddd441 100644
--- a/doc/qmdoc.1.md
+++ b/doc/qmdoc.1.md
@@ -312,6 +312,9 @@ its language is set to `pre`
 ! HINT:
 ! It is of course possible to have line numbering for `pre` blocks, either by
 ! using another term as language, e.g. `raw`, or by adding `from=1`
+!
+! You can also use `from=0` to disable the line numbers, all the while keeping
+! the alternate line background as well as language name being shown.
 
 
 # INDENTATION
diff --git a/src/main.c b/src/main.c
index c7bda86..75c7158 100644
--- a/src/main.c
+++ b/src/main.c
@@ -803,7 +803,7 @@ leave_block(MD_BLOCKTYPE type, void *details, void *ctx_)
 
                         if (!raw_str(ctx, "<div class=\"code\"><pre class=\"lineno\">"))
                             return ERR_PARSER_BUFFERED;
-                        for (int n = ctx->code.from; s; ++n) {
+                        for (int n = ctx->code.from; n > 0 && s; ++n) {
                             const char *e = memchr(s, '\n', l);
                             if (!e) break;
                             l -= ++e - s;