diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6fce4e96..7c8e7c8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All changes to the Ox gem are documented here. Releases follow semantic versioning.
 
+## [2.14.10] - 2022-03-10
+
+### Fixed
+
+- Writing strings over 16K to a file with builder no longer causes a crash.
+
 ## [2.14.9] - 2022-02-11
 
 ### Fixed
diff --git a/ext/ox/buf.h b/ext/ox/buf.h
index c5a676b3..110798ba 100644
--- a/ext/ox/buf.h
+++ b/ext/ox/buf.h
@@ -86,8 +86,16 @@ buf_append_string(Buf buf, const char *s, size_t slen) {
 
 	    if (len != (size_t)write(buf->fd, buf->head, len)) {
 		buf->err = true;
+		return;
 	    }
 	    buf->tail = buf->head;
+	    if (sizeof(buf->base) <= slen) {
+		if (slen != (size_t)write(buf->fd, s, slen)) {
+		    buf->err = true;
+		    return;
+		}
+		return;
+	    }
 	} else {
 	    size_t	len = buf->end - buf->head;
 	    size_t	toff = buf->tail - buf->head;
diff --git a/lib/ox/version.rb b/lib/ox/version.rb
index 39e66ee8..22070b99 100644
--- a/lib/ox/version.rb
+++ b/lib/ox/version.rb
@@ -1,5 +1,5 @@
 
 module Ox
   # Current version of the module.
-  VERSION = '2.14.9'
+  VERSION = '2.14.10'
 end