diff --git a/src/mode/fdm/export.js b/src/mode/fdm/export.js
index 50477d9a..d756b34f 100644
--- a/src/mode/fdm/export.js
+++ b/src/mode/fdm/export.js
@@ -148,6 +148,7 @@
                 iter: loops - 1
             });
         }
+        if (process.ranges)
         for (let range of process.ranges) {
             if (range.fields.outputLoops) {
                 rloops.push({