diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index d5e89e2..c69681d 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -7,7 +7,7 @@
 #include "mbedtls/oid.h"
 #include "mbedtls/base64.h"
 
-#if MBEDTLS_X509_MAX_INTERMEDIATE_CA >= 19
+#if MBEDTLS_X509_MAX_INTERMEDIATE_CA > 19
 #error "The value of MBEDTLS_X509_MAX_INTERMEDIATE_C is larger \
 than the current threshold 19. To test larger values, please \
 adapt the script tests/data_files/dir-max/long.sh."