diff --git a/protobuf-c/protobuf-c.c b/protobuf-c/protobuf-c.c
index 0623eb8..10aac64 100644
--- a/protobuf-c/protobuf-c.c
+++ b/protobuf-c/protobuf-c.c
@@ -50,7 +50,7 @@
 #include <string.h>                     /* for strlen(), memcpy(), memmove() */
 
 #ifndef PRINT_UNPACK_ERRORS
-#define PRINT_UNPACK_ERRORS              1
+#define PRINT_UNPACK_ERRORS              0
 #endif
 
 #include "protobuf-c.h"