diff --git a/src/config_trapdoor.c b/src/config_trapdoor.c
index 3cac5f9020..6b08aa2778 100644
--- a/src/config_trapdoor.c
+++ b/src/config_trapdoor.c
@@ -1130,8 +1130,8 @@ TbBool parse_trapdoor_trap_blocks(char *buf, long len, const char *config_textna
           }
           if (n < 1)
           {
-              CONFWRNLOG("Incorrect value of \"%s\" parameter in [%s] block of %s file.",
-                  COMMAND_TEXT(cmd_num), block_buf, config_textname);
+              CONFWRNLOG("Incorrect value of \"%s\" parameter in [%.*s] block of %s file.",
+                  COMMAND_TEXT(cmd_num), blocknamelen, blockname, config_textname);
           }
           break;
       case ccr_comment: