diff --git a/radio/tests/interpolation/farrow/test.cpp b/radio/tests/interpolation/farrow/test.cpp
index b335bc3..7d2961d 100644
--- a/radio/tests/interpolation/farrow/test.cpp
+++ b/radio/tests/interpolation/farrow/test.cpp
@@ -156,11 +156,14 @@ void test()
 	size_t remain = iq_in.size();
 	const size_t BLOCKSIZE=1024;
 
-	// Get input buffer from Farrow Block
-	auto farrow_buf_in = dynamic_cast<Buffer<ComplexScalar>*>(farrow.buffer_in());
-
+	// Create input buffer for Farrow Block
+	auto farrow_buf_in = new Buffer<ComplexScalar>(BLOCKSIZE);
+	
 	// Create output buffer for Farrow Block
 	auto farrow_buf_out = new Buffer<ComplexScalar>(BLOCKSIZE);
+
+	// Assign buffers to Farrow Block
+	farrow.buffer_in_add(farrow_buf_in);
 	farrow.buffer_out_add(farrow_buf_out);
 
 	while(remain)