diff --git a/tests/scripts/components-configuration-tls.sh b/tests/scripts/components-configuration-tls.sh
index e2c3211d16..d30015769c 100644
--- a/tests/scripts/components-configuration-tls.sh
+++ b/tests/scripts/components-configuration-tls.sh
@@ -272,16 +272,18 @@ component_build_no_ssl_srv () {
     msg "build: full config except SSL server, make, gcc" # ~ 30s
     scripts/config.py full
     scripts/config.py unset MBEDTLS_SSL_SRV_C
-    scripts/config.py unset DEBUG_C
+    scripts/config.py unset MBEDTLS_DEBUG_C
     $MAKE_COMMAND CC=gcc CFLAGS='-Werror -Wall -Wextra -O1 -Wmissing-prototypes'
+    ! nm library/libmbedtls.a | sed 's/.* //' | grep -x -F mbedtls_debug_print_buf
 }
 
 component_build_no_ssl_cli () {
     msg "build: full config except SSL client, make, gcc" # ~ 30s
     scripts/config.py full
     scripts/config.py unset MBEDTLS_SSL_CLI_C
-    scripts/config.py unset DEBUG_C
+    scripts/config.py unset MBEDTLS_DEBUG_C
     $MAKE_COMMAND CC=gcc CFLAGS='-Werror -Wall -Wextra -O1 -Wmissing-prototypes'
+    ! nm library/libmbedtls.a | sed 's/.* //' | grep -x -F mbedtls_debug_print_buf
 }
 
 component_test_no_max_fragment_length () {