diff --git a/printer-linter/src/printerlinter/linters/formulas.py b/printer-linter/src/printerlinter/linters/formulas.py
index c4b0b9d69a..05774742cf 100644
--- a/printer-linter/src/printerlinter/linters/formulas.py
+++ b/printer-linter/src/printerlinter/linters/formulas.py
@@ -57,10 +57,10 @@ class Formulas(Linter):
             self._definition[definition_name] = json.loads(definition_file.read_text())
 
         if definition_file.suffix == ".cfg":
-            self._definition[definition_name] = self.parse_cfg(definition_file)
+            self._definition[definition_name] = self._parseCfg(definition_file)
 
 
-    def parse_cfg(self, file_path:Path) -> dict:
+    def _parseCfg(self, file_path:Path) -> dict:
         config = ConfigParser()
         config.read([file_path])
         file_data  ={}