diff --git a/src/Ophis/CorePragmas.py b/src/Ophis/CorePragmas.py
index f6b25a1..b234b87 100644
--- a/src/Ophis/CorePragmas.py
+++ b/src/Ophis/CorePragmas.py
@@ -36,6 +36,8 @@ def pragmaInclude(ppt, line, result):
     filename = line.expect("STRING").value
     line.expect("EOL")
     if type(filename) == str:
+        global loadedfiles
+        loadedfiles[filename] = True
         result.append(FE.parse_file(ppt, filename))