diff --git a/README.md b/README.md
index 74850ae9c..8d1a6e7a0 100644
--- a/README.md
+++ b/README.md
@@ -238,7 +238,7 @@ optimization making your “back traces” populated with readable data. Use the
 CFLAGS to disable the compilation optimization parameters:
 
 ```shell
-$ export CFLAGS=”-g -02”
+$ export CFLAGS="-g -O0"
 $ ./build.sh
 $ ./configure
 $ make