diff --git a/gr-jay/lib/preamble_sync_impl.cc b/gr-jay/lib/preamble_sync_impl.cc
index a2e7163..4888061 100644
--- a/gr-jay/lib/preamble_sync_impl.cc
+++ b/gr-jay/lib/preamble_sync_impl.cc
@@ -25,6 +25,8 @@
 #include <gnuradio/io_signature.h>
 #include "preamble_sync_impl.h"
 
+#define WITH_DEBUG_MESSAGES		0
+
 namespace gr
 {
 namespace jay
@@ -83,7 +85,9 @@ int preamble_sync_impl::general_work (int noutput_items, gr_vector_int &ninput_i
 				m_state = PreambleSlow;
 				m_wordCount = 0;
 				m_dataCount = 0;
+#if WITH_DEBUG_MESSAGES
 				fprintf(stderr, "Reset\n");
+#endif
 			}
 			continue;
 		}
@@ -194,7 +198,9 @@ int preamble_sync_impl::general_work (int noutput_items, gr_vector_int &ninput_i
 		}
 		if (m_state != m_stateNext)
 		{
+#if WITH_DEBUG_MESSAGES
 			fprintf(stderr, "State changed: %s => %s\n", stateNames[m_state], stateNames[m_stateNext]);
+#endif
 		}
 		m_wordCount = m_wordSize - 1;
 		m_state = m_stateNext;