diff --git a/README.md b/README.md
index 05766373..d724be24 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ This was done make sure that older and incomplete clients wouldn't produce false
 If you're using a DLU client, then you don't need to change anything. But if you're using any other client, you'll have to go into the "CMakeVariables.txt" file and change it to match your client's version. (likely 171022)
 
 ### Linux builds
-Make sure packages like `gcc`, `cmake`, and `zlib` are installed. Depending on the distribution, these packages might already be installed.
+Make sure packages like `gcc`, `cmake`, and `zlib` are installed. Depending on the distribution, these packages might already be installed. Note that on systems like Ubuntu, you will need the `zlib1g-dev` package so that the header files are available.
 
 **Build the repository**
 ```bash