diff --git a/src/dap_common.c b/src/dap_common.c
index c53b4e9ec40d3dfbac3c1326ddcc6890c556f124..1465dbe6fb8bcd7df2e1b2ae7ced0cf7a6e016a5 100755
--- a/src/dap_common.c
+++ b/src/dap_common.c
@@ -157,7 +157,7 @@ static pthread_t s_log_thread = 0;
 static void  *s_log_thread_proc(void *arg);
 
 typedef struct log_str_t {
-    char str[400];
+    char str[1000];
     unsigned int offset;
     struct log_str_t *prev, *next;
 } log_str_t;