diff --git a/src/algorithms/signal_source/gnuradio_blocks/rtl_tcp_signal_source_c.cc b/src/algorithms/signal_source/gnuradio_blocks/rtl_tcp_signal_source_c.cc
index 0a724941a..381e07929 100644
--- a/src/algorithms/signal_source/gnuradio_blocks/rtl_tcp_signal_source_c.cc
+++ b/src/algorithms/signal_source/gnuradio_blocks/rtl_tcp_signal_source_c.cc
@@ -162,8 +162,8 @@ int rtl_tcp_signal_source_c::work (int noutput_items,
                                         this));
 
     for ( ; i < noutput_items && unread_ > 1; i++ ) {
-      float im = buffer_[--unread_];
       float re = buffer_[--unread_];
+      float im = buffer_[--unread_];
       if (flip_iq_) {
           out[i] = gr_complex (im, re);
       }