diff --git a/configs/config-suite-b.h b/configs/config-suite-b.h
index 9466845..ea6a5bf 100644
--- a/configs/config-suite-b.h
+++ b/configs/config-suite-b.h
@@ -63,6 +63,8 @@
 #define MBEDTLS_OID_C
 #define MBEDTLS_PK_C
 #define MBEDTLS_PK_PARSE_C
+/* Library does not support enabling SHA-224 without SHA-256. Future version will
+ * have this option disabled by default. */
 #define MBEDTLS_SHA224_C
 #define MBEDTLS_SHA256_C
 #define MBEDTLS_SHA384_C