diff --git a/src/org/nschmidt/ldparteditor/text/PrimitiveReplacer.java b/src/org/nschmidt/ldparteditor/text/PrimitiveReplacer.java
index 769871f06..865d2370a 100644
--- a/src/org/nschmidt/ldparteditor/text/PrimitiveReplacer.java
+++ b/src/org/nschmidt/ldparteditor/text/PrimitiveReplacer.java
@@ -283,7 +283,7 @@ private static List<String> substitutePrimitivesTori(String name, List<String> l
             }
 
             final int length = toriName.length();
-            if (length == 8 && validToriName(toriName)) {
+            if (length == 8 && validToriName(toriName) && lines != null) {
                 try {
                     double major = 1;
                     double minor = 1;