diff --git a/sonar-project.properties b/sonar-project.properties
index 308dd80bf..040d2877f 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -1,5 +1,8 @@
 sonar.projectKey=EIPStackGroup_OpENer
 sonar.organization=eipstackgroup
+sonar.language=c
+sonar.c.file.suffixes=.c,.h
+sonar.cpp.file.suffixes=.cc,.cpp,.cxx,.c++,.hh,.hpp,.hxx,.h++,.ipp
 sonar.coverage.exclusions=fuzz/**, source/tests/**
 
 # This is the name and version displayed in the SonarCloud UI.