1 files changed, 5 insertions, 0 deletions
diff --git a/stream/tvi_def.h b/stream/tvi_def.h
index 9682b56f13..19a9d9d08a 100644
--- a/stream/tvi_def.h
+++ b/stream/tvi_def.h
@@ -1,3 +1,6 @@
+#ifndef TVI_DEF_H
+#define TVI_DEF_H
+
 #include <stdlib.h> /* malloc */
 #include <string.h> /* memset */
 
@@ -103,3 +106,5 @@ static inline void fill_blank_frame(char* buffer,int len,int fmt){
         memset(buffer,0xC0,len);
     }
 }
+
+#endif /* TVI_DEF_H */