diff --git a/deps/ox/src/ox/oc/write.cpp b/deps/ox/src/ox/oc/write.cpp
index 73f95848..024e3545 100644
--- a/deps/ox/src/ox/oc/write.cpp
+++ b/deps/ox/src/ox/oc/write.cpp
@@ -27,7 +27,7 @@ Error OrganicClawWriter::fieldCString(const char *key, const char *const*val, in
 }
 
 Error OrganicClawWriter::fieldCString(const char *key, const char *const*val) noexcept {
-	return fieldCString(key, const_cast<const char**>(val), {});
+	return fieldCString(key, const_cast<const char**>(val), static_cast<int>(ox_strlen(val)));
 }
 
 Error OrganicClawWriter::field(const char *key, const UUID *uuid) noexcept {