diff --git a/dsd.h b/dsd.h
index ad6ffdc..160c410 100644
--- a/dsd.h
+++ b/dsd.h
@@ -1,3 +1,5 @@
+#ifndef DSD_H
+#define DSD_H
 /*
  * Copyright (C) 2010 DSD Author
  * GPG Key ID: 0x3F1D7FD0 (74EF 430D F7F2 0A48 FCE6  F630 FAA2 635D 3F1D 7FD0)
@@ -264,3 +266,5 @@ void processX2TDMAvoice (dsd_opts * opts, dsd_state * state);
 void processDSTAR_HD (dsd_opts * opts, dsd_state * state);
 short dmr_filter(short sample);
 short nxdn_filter(short sample);
+
+#endif
diff --git a/test/reedsolomon-test.cpp b/test/reedsolomon-test.cpp
index 3bf6786..4b7bac9 100644
--- a/test/reedsolomon-test.cpp
+++ b/test/reedsolomon-test.cpp
@@ -19,7 +19,7 @@ static void byte_to_binary(char* b, int x)
 
 TEST(ReedSolomonTest, Test1)
 {
-    ReedSolomon_63_47_17 rs;
+    ReedSolomon_63 rs(8);
     int recd[63] = {};
     int expected[63] = {};
     int output[63];