diff --git a/src/main/scala/io/appthreat/atom/Atom.scala b/src/main/scala/io/appthreat/atom/Atom.scala
index f6ff343..66ab44c 100644
--- a/src/main/scala/io/appthreat/atom/Atom.scala
+++ b/src/main/scala/io/appthreat/atom/Atom.scala
@@ -64,12 +64,13 @@ object Atom:
 
     private val COMMON_IGNORE_REGEX = ".*(test|docs|example|samples|mocks|Documentation|demos).*"
 
+    private val CHEN_INCLUDE_PATH = sys.env.getOrElse("CHEN_INCLUDE_PATH", "")
     // Custom include paths for c/c++
     private val C2ATOM_INCLUDE_PATH =
-        if System.getenv("CHEN_INCLUDE_PATH").nonEmpty && File(
-              System.getenv("CHEN_INCLUDE_PATH")
+        if CHEN_INCLUDE_PATH.nonEmpty && File(
+              CHEN_INCLUDE_PATH
             ).isDirectory
-        then System.getenv("CHEN_INCLUDE_PATH").split(java.io.File.pathSeparator).toSet
+        then CHEN_INCLUDE_PATH.split(java.io.File.pathSeparator).toSet
         else
             Set.empty