diff --git a/nptl/tst-attr2.c b/nptl/tst-attr2.c
index b5c1a5f961..a60598dd7e 100644
--- a/nptl/tst-attr2.c
+++ b/nptl/tst-attr2.c
@@ -91,7 +91,7 @@ default detach state wrong: %d, expected %d (PTHREAD_CREATE_JOINABLE)\n",
       puts ("1st attr_getguardsize failed");
       exit (1);
     }
-  if (g != sysconf (_SC_PAGESIZE))
+  if (g != (size_t) sysconf (_SC_PAGESIZE))
     {
       printf ("default guardsize %zu, expected %ld (PAGESIZE)\n",
 	      g, sysconf (_SC_PAGESIZE));
diff --git a/nptl/tst-mutex4.c b/nptl/tst-mutex4.c
index 89995b15b7..9caed444c1 100644
--- a/nptl/tst-mutex4.c
+++ b/nptl/tst-mutex4.c
@@ -64,7 +64,7 @@ do_test (void)
   memset (data, '\0', ps);
 
   /* Write the data to the file.  */
-  if (write (fd, data, ps) != ps)
+  if (write (fd, data, ps) != (ssize_t) ps)
     {
       puts ("short write");
       return 1;