diff --git a/native/src/base/logging.cpp b/native/src/base/logging.cpp
index a093284e4..8f25df642 100644
--- a/native/src/base/logging.cpp
+++ b/native/src/base/logging.cpp
@@ -15,7 +15,7 @@ static int fmt_and_log_with_rs(LogLevel level, const char *fmt, va_list ap) {
     buf[0] = '\0';
     // Fortify logs when a fatal error occurs. Do not run through fortify again
     int len = std::min(__call_bypassing_fortify(vsnprintf)(buf, sz, fmt, ap), sz - 1);
-    log_with_rs(level, u8_slice(buf, sz));
+    log_with_rs(level, u8_slice(buf, len));
     return len;
 }