diff --git a/README.md b/README.md
index a0ddf97a..284009b2 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ The differences from the upstream repository are described below:
 
 ### How to build
 
+**Requires 2GB+ memory.**
+
 ```sh
 # Docker
 make