diff --git a/doc/build/gcc.rst b/doc/build/gcc.rst
index c76a7fbd732..1fef718ceec 100644
--- a/doc/build/gcc.rst
+++ b/doc/build/gcc.rst
@@ -122,7 +122,7 @@ Out-of-tree building
 ~~~~~~~~~~~~~~~~~~~~
 
 By default building is performed locally and the objects are saved in the source
-directory. To build out-out-tree use one of the two methods below:
+directory. To build out-of-tree use one of the two methods below:
 
 Add O= parameter to the make command line: