diff --git a/source/f90/INSTALL b/source/f90/INSTALL
index bd13f925b831d0b9063e4531a8aada51eb9453cd..aaf8a4a743bac69b0e11b2cc3698276473e36651 100644
--- a/source/f90/INSTALL
+++ b/source/f90/INSTALL
@@ -19,7 +19,7 @@ parameter for changing the working directory.
 
 Building the python modules requires python3 and the related numpy package with f2py.
 
-After a successful build the the python3 modules 'doeels' and 'doboson' can be used.
+After a successful build the python3 modules 'doeels' and 'doboson' can be used.
 
 Example: