diff --git a/docs/install.rst b/docs/install.rst
index bb4ce1a7..4cd25618 100644
--- a/docs/install.rst
+++ b/docs/install.rst
@@ -61,7 +61,7 @@ __ http://www.quicklisp.org/beta/
 
 When building from sources, you should always build from the current git
 HEAD as it's basically the only source that is managed in a way to ensure it
-builds aginst current set of dependencies versions.
+builds against current set of dependencies versions.
 
 The build system for pgloader uses a Makefile and the Quicklisp Common Lisp
 packages distribution system.