diff --git a/include/mbedtls/build_info.h b/include/mbedtls/build_info.h
index 86a3e16..bfbf9de 100644
--- a/include/mbedtls/build_info.h
+++ b/include/mbedtls/build_info.h
@@ -87,9 +87,10 @@
 #define MBEDTLS_MD_LIGHT
 #endif
 
-/* Auto-enable MBEDTLS_MD_LIGHT it one module needs it.
+/* Auto-enable MBEDTLS_MD_LIGHT if some module needs it.
  */
-#if defined(MBEDTLS_PEM_PARSE_C)
+#if defined(MBEDTLS_PEM_PARSE_C) || \
+    defined(MBEDTLS_RSA_C)
 #define MBEDTLS_MD_LIGHT
 #endif