diff --git a/test/maat_json.json b/test/maat_json.json
index 036947a..c6b24c3 100644
--- a/test/maat_json.json
+++ b/test/maat_json.json
@@ -2156,6 +2156,21 @@
                         }                  
                     ],
                     "not_flag" : 0
+                },
+                {
+                    "regions": [
+                        {
+                            "table_name": "KEYWORDS_TABLE",
+                            "table_type": "string",
+                            "table_content": {
+                                "keywords": "contains-keywords-MUST-hit-by-rule-186",
+                                "expr_type": "and",
+                                "match_method": "expr",
+                                "format": "uncase plain"
+                            }
+                        }
+                    ],
+                     "not_flag" : 0
                 }
             ]
         }
diff --git a/test/test_maatframe.cpp b/test/test_maatframe.cpp
index da3449d..d1173eb 100644
--- a/test/test_maatframe.cpp
+++ b/test/test_maatframe.cpp
@@ -1117,11 +1117,12 @@ TEST(NOTLogic, ScanIrrelavantAtLast)
 TEST(NOTLogic, ScanHitAtLast)
 {
 	const char* string_should_not_hit="This string should not hit.";
+	const char* string_should_hit="This string contains-keywords-MUST-hit-by-rule-186.";
 	int ret=0;
 	int table_id=0;
 	struct Maat_rule_t result[4];
 	int found_pos[4];
-	const char* not_hit_table_name="HTTP_URL", *hit_table_name="IP_PLUS_CONFIG";
+	const char* not_hit_table_name="HTTP_URL", *hit_table_name1="IP_PLUS_CONFIG", *hit_table_name2="KEYWORDS_TABLE";
 	scan_status_t mid=NULL;
 	table_id=Maat_table_register(g_feather, not_hit_table_name);
 	ASSERT_GT(table_id, 0);
@@ -1139,14 +1140,22 @@ TEST(NOTLogic, ScanHitAtLast)
 	v4_addr.dest=htons(80);
 	ipv4_addr.v4=&v4_addr;
 
-	table_id=Maat_table_register(g_feather, hit_table_name);
+	table_id=Maat_table_register(g_feather, hit_table_name1);
 	ASSERT_GT(table_id, 0);
 	
-	Maat_set_scan_status(g_feather, &mid, MAAT_SET_SCAN_LAST_REGION, NULL, 0);	
 	ret=Maat_scan_proto_addr(g_feather, table_id, &ipv4_addr, 6, result, 4, &mid,0);
 	
 	
-	EXPECT_EQ(ret, 1);
+	EXPECT_EQ(ret, -2);
+
+	table_id=Maat_table_register(g_feather, hit_table_name2);
+	ASSERT_GT(table_id, 0);
+
+	Maat_set_scan_status(g_feather, &mid, MAAT_SET_SCAN_LAST_REGION, NULL, 0);	
+
+	ret=Maat_full_scan_string(g_feather, table_id, CHARSET_GBK, string_should_hit, strlen(string_should_hit), 
+						result, found_pos, 4, &mid, 0);						
+	
 	EXPECT_EQ(result[0].config_id, 186);
 	Maat_clean_status(&mid);