diff --git a/tests/scripts/generate_code.pl b/tests/scripts/generate_code.pl
index 6b195e7..4591378 100755
--- a/tests/scripts/generate_code.pl
+++ b/tests/scripts/generate_code.pl
@@ -172,7 +172,7 @@
 $param_defs
     if( cnt != $param_count )
     {
-        fprintf( stderr, "\\nIncorrect argument count (%d != %d)\\n", cnt, $param_count );
+        polarssl_fprintf( stderr, "\\nIncorrect argument count (%d != %d)\\n", cnt, $param_count );
         return( 2 );
     }
 
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index 89b40b7..7af1d1e 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -445,7 +445,7 @@
     my_ret = x509_get_rsassa_pss_params( &params, &my_msg_md, &my_mgf_md,
                                          &my_salt_len );
 
-    if( my_ret != ref_ret ) printf( "\n%04X\n", - my_ret );
+    if( my_ret != ref_ret ) polarssl_printf( "\n%04X\n", - my_ret );
 
     TEST_ASSERT( my_ret == ref_ret );