diff --git a/doc/src/Manual_build.txt b/doc/src/Manual_build.txt
index 747a55a7296d0ab206c0119ecb7a85dd5e8e7a36..a6b881cb79708c37760dc482cac2a7017342d7df 100644
--- a/doc/src/Manual_build.txt
+++ b/doc/src/Manual_build.txt
@@ -81,7 +81,7 @@ sudo yum install python3-virtualenv :pre
 
 Fedora (since version 22) :h4
 
-sudo dnf install python3-virtualenv pre
+sudo dnf install python3-virtualenv :pre
 
 MacOS X :h4