diff --git a/Net/src/MultipartReader.cpp b/Net/src/MultipartReader.cpp
index d167906d3..98a0acaa9 100644
--- a/Net/src/MultipartReader.cpp
+++ b/Net/src/MultipartReader.cpp
@@ -38,7 +38,7 @@ MultipartStreamBuf::MultipartStreamBuf(std::istream& istr, const std::string& bo
 	_boundary(boundary),
 	_lastPart(false)
 {
-	poco_assert (!boundary.empty() && boundary.length() < STREAM_BUFFER_SIZE - 6);
+	poco_assert (boundary.length() < STREAM_BUFFER_SIZE - 6);
 }