diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index d7e0b8c01..92acd4e1f 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -2106,7 +2106,7 @@ run_test    "Authentication: client no cert, ssl3" \
 # The "max_int chain" tests assume that MAX_INTERMEDIATE_CA is set to its
 # default value (8)
 
-: ${MAX_IM_CA:='20'}
+: ${MAX_IM_CA:='19'}
 MAX_IM_CA_CONFIG=$( ../scripts/config.pl get MBEDTLS_X509_MAX_INTERMEDIATE_CA)
 
 if [ -n "$MAX_IM_CA_CONFIG" ] && [ "$MAX_IM_CA_CONFIG" -gt "$MAX_IM_CA" ]; then
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index 34164a83f..0dfdd61c2 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."