diff --git a/tests/scripts/list-macros.sh b/tests/scripts/list-macros.sh
index 5982bb7..3fa66f1 100755
--- a/tests/scripts/list-macros.sh
+++ b/tests/scripts/list-macros.sh
@@ -9,8 +9,15 @@
 
 HEADERS=$( ls include/mbedtls/*.h include/psa/*.h | egrep -v 'compat-1\.3\.h' )
 
-sed -n -e 's/.*#define \([a-zA-Z0-9_]*\).*/\1/p' $HEADERS \
-    | egrep -v '^(asm|inline|EMIT|_CRT_SECURE_NO_DEPRECATE)$|^MULADDC_' \
-    | sort -u > macros
+# White-list macros we want to be able to refer to that don't exist in the
+# crypto library, useful when referring to macros in Mbed TLS from comments.
+WHITELIST='MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS'
+
+# Generate a list of macros and combine it with the white-listed macros in
+# sorted order.
+{ sed -n -e 's/.*#define \([a-zA-Z0-9_]*\).*/\1/p' $HEADERS |
+  egrep -v '^(asm|inline|EMIT|_CRT_SECURE_NO_DEPRECATE)$|^MULADDC_';
+  printf '%s\n' $WHITELIST;
+} | sort -u > macros
 
 wc -l macros