diff --git a/src/doc-printer.js b/src/doc-printer.js
index f33c2b30d..2bbf63d13 100644
--- a/src/doc-printer.js
+++ b/src/doc-printer.js
@@ -297,10 +297,16 @@ function printDocToString(doc, options) {
             break;
           }
 
-          const remaining = parts.slice(2);
-          const remainingCmd = [ind, mode, fill(remaining)];
+          // At this point we've handled the first pair (context, separator)
+          // and will create a new fill doc for the rest of the content.
+          // Ideally we wouldn't mutate the array here but coping all the
+          // elements to a new array would make this algorithm quadratic,
+          // which is unusable for large arrays (e.g. large texts in JSX).
+          parts.splice(0, 2);
+          const remainingCmd = [ind, mode, fill(parts)];
+
+          const secondContent = parts[0];
 
-          const secondContent = parts[2];
           const firstAndSecondContentFlatCmd = [
             ind,
             MODE_FLAT,