diff --git a/01-basic/E-installing/README.adoc b/01-basic/E-installing/README.adoc
index a692bd2..eb6e6e8 100644
--- a/01-basic/E-installing/README.adoc
+++ b/01-basic/E-installing/README.adoc
@@ -176,7 +176,7 @@ Extra Notes
 Overriding the default install location
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-As mentioned the default install location is set from the +CMAKE_INSTALL_PERFIX+,
+As mentioned the default install location is set from the +CMAKE_INSTALL_PREFIX+,
 which defaults to `/usr/local/`
 
 If you want to change this default location for all users you can add the