diff --git a/sonar-project.properties b/sonar-project.properties
index dc11acaf7..9a8a462a5 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -9,7 +9,6 @@ sonar.host.url=https://sonarcloud.io
 # prior to SonarQube 6.1.
 sonar.projectName=libtorrent
 sonar.projectVersion=1.2
-sonar.language=c++
 
 # to allow shallow clones
 sonar.scm.disabled=true
@@ -17,5 +16,5 @@ sonar.scm.disabled=true
 # Path is relative to the sonar-project.properties file. Replace "\" by "/" on
 # Windows.
 # This property is optional if sonar.modules is set. 
-sonar.sources=.
+sonar.sources=src,include