diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 68dc474..fb3b6e1 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -307,6 +307,10 @@
 #error "MBEDTLS_MEMORY_BACKTRACE defined, but not all prerequesites"
 #endif
 
+#if defined(MBEDTLS_MEMORY_DEBUG) && !defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
+#error "MBEDTLS_MEMORY_DEBUG defined, but not all prerequesites"
+#endif
+
 #if defined(MBEDTLS_PADLOCK_C) && !defined(MBEDTLS_HAVE_ASM)
 #error "MBEDTLS_PADLOCK_C defined, but not all prerequisites"
 #endif