diff --git a/pym/cl_template.py b/pym/cl_template.py
index 2bf1ac5..7e378c3 100644
--- a/pym/cl_template.py
+++ b/pym/cl_template.py
@@ -360,7 +360,8 @@ class fileHeader(_terms):
                 textLines = self.body.splitlines()
                 if textLines:
                     textLine = textLines[0]
-                    rePar = re.compile("\s*#\s*calculate\s+",re.I)
+                    rePar = re.compile(\
+                        "\s*#\s*calculate\s+\\\\?|\s*#\s*calculate\\\\?$", re.I)
                     reP = rePar.search(textLine)
                     if reP:
                         reL = False
@@ -494,7 +495,8 @@ class dirHeader(_terms):
         flagErrorBody = False
         if textLines:
             textLine = textLines[0]
-            rePar = re.compile("\s*#\s*calculate\s+",re.I)
+            rePar = re.compile(\
+                "\s*#\s*calculate\s+\\\\?|\s*#\s*calculate\\\\?$",re.I)
             reP = rePar.search(textLine)
             if reP:
                 reL = False