diff --git a/libc/bionic/pthread_rwlock.cpp b/libc/bionic/pthread_rwlock.cpp
index b1c48c8..a065295 100644
--- a/libc/bionic/pthread_rwlock.cpp
+++ b/libc/bionic/pthread_rwlock.cpp
@@ -298,7 +298,7 @@
     if (result == 0 || result == EAGAIN) {
       return result;
     }
-    result = check_timespec(abs_timeout_or_null);
+    result = check_timespec(abs_timeout_or_null, true);
     if (result != 0) {
       return result;
     }
@@ -370,7 +370,7 @@
     if (result == 0) {
       return result;
     }
-    result = check_timespec(abs_timeout_or_null);
+    result = check_timespec(abs_timeout_or_null, true);
     if (result != 0) {
       return result;
     }