diff --git a/lib/make-middleware.js b/lib/make-middleware.js
index 18ea4274..e46ac288 100644
--- a/lib/make-middleware.js
+++ b/lib/make-middleware.js
@@ -34,7 +34,12 @@ function makeMiddleware (setup) {
     var busboy
 
     try {
-      busboy = Busboy({ headers: req.headers, limits: limits, preservePath: preservePath })
+      // Adjust limits.fileSize by +1 to prevent Busboy from emitting 'limit' for files exactly at the limit
+      var adjustedLimits = { ...limits }
+      if (adjustedLimits.fileSize != null) {
+        adjustedLimits.fileSize += 1
+      }
+      busboy = Busboy({ headers: req.headers, limits: adjustedLimits, preservePath: preservePath })
     } catch (err) {
       return next(err)
     }