diff --git a/client/d4.c b/client/d4.c
index 55ab980..a9b607f 100644
--- a/client/d4.c
+++ b/client/d4.c
@@ -89,5 +89,7 @@ int main (int argc, char* argv[])
     d4 = d4_init(confdir);
     free(confdir);
     d4_load_config(d4);
+
+
     return EXIT_SUCCESS;
 }
diff --git a/client/d4.h b/client/d4.h
index 384ed39..21913ae 100644
--- a/client/d4.h
+++ b/client/d4.h
@@ -6,6 +6,11 @@
 #define SZCONFVALUE 1024
 #define SZERRVALUE 1024
 
+#define INSERT_ERROR(...) do { \
+    if (d4->err_idx < NERRORS) \
+        snprintf(d4->errors[d4->err_idx],SZERRVALUE,__VA_ARGS__); \
+    } while(0)
+
 typedef struct d4_header_s {
     uint8_t  version;
     uint8_t type;