diff --git a/Makefile b/Makefile
index 18d3815b8..19ae0d5f1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
-# ifndef LLAMA_MAKEFILE
-# $(error The Makefile build is deprecated. Use the CMake build instead. For more details, see https://github.com/ggerganov/llama.cpp/blob/master/docs/build.md)
-# endif
+ifndef LLAMA_MAKEFILE
+$(error The Makefile build is deprecated. Use the CMake build instead. For more details, see https://github.com/ggerganov/llama.cpp/blob/master/docs/build.md)
+endif
 
 # Define the default target now so that it is always the first target
 BUILD_TARGETS = \