diff --git a/build/README.md b/build/README.md
index 7758a87e85..8c16e4d6bc 100644
--- a/build/README.md
+++ b/build/README.md
@@ -19,7 +19,7 @@ scripts can run on any platform that supports python v2.7 and JRE 7+.
 All the scripts here use two environment variables:
 
 * `PRINT_ARGUMENTS` if set, will print the command-line to subprocesses.
-* `RAUSE_INTERRUPT` if set, will raise interrupts rather than swallowing them.
+* `RAISE_INTERRUPT` if set, will raise interrupts rather than swallowing them.
 
 ```shell
 $ PRINT_ARGUMENTS=1 build.py