diff --git a/src/lib/imdb/imdb.c b/src/lib/imdb/imdb.c
index ebadda95e96f9fd89a40f5e4001c505e6819229c..afa111c1d88191e2ac9eb4f9705eb75450a7af22 100644
--- a/src/lib/imdb/imdb.c
+++ b/src/lib/imdb/imdb.c
@@ -372,13 +372,13 @@ static TGID_Record* IMDB_TgidCreateRecord(IMDB_DataBaseMgr *mgr, const char *tgi
     int ret;
     int pid;
     u64 startup_ts;
-    char comm[TASK_COMM_LEN + 1];
+    char comm[TASK_COMM_LEN];
     TGID_Record *record;
 
     comm[0] = 0;
     pid = strtol(tgid, NULL, 10);
 
-    ret = get_proc_comm(pid, comm, TASK_COMM_LEN + 1);
+    ret = get_proc_comm(pid, comm, TASK_COMM_LEN);
     if (ret) {
         return NULL;
     }
diff --git a/src/lib/imdb/imdb.h b/src/lib/imdb/imdb.h
index 257cea56f7e88875509f6f158758a70f40fc8e08..650cdeaafe13fa6069f65f518c883a15bfcfeb94 100644
--- a/src/lib/imdb/imdb.h
+++ b/src/lib/imdb/imdb.h
@@ -108,7 +108,7 @@ typedef struct {
 typedef struct {
     TGID_RecordKey key;
     char container_id[CONTAINER_ABBR_ID_LEN + 1];
-    char comm[TASK_COMM_LEN + 1];
+    char comm[TASK_COMM_LEN];
     char cmdline[PROC_CMDLINE_LEN];
     H_HANDLE;
 } TGID_Record;
diff --git a/src/lib/probe/snooper.h b/src/lib/probe/snooper.h
index c11a186bb83b8af75da2b9fd29e57e7a1f45bcfe..d147a2a4e8fd17874c04f7043994bcdbbd836c0b 100644
--- a/src/lib/probe/snooper.h
+++ b/src/lib/probe/snooper.h
@@ -34,7 +34,7 @@ enum snooper_conf_e {
 };
 
 struct snooper_app_s {
-    char comm[TASK_COMM_LEN + 1];
+    char comm[TASK_COMM_LEN];
     char *cmdline;
     char *debuging_dir;
 };