diff --git a/src/main/java/com/amazon/opendistroforelasticsearch/sql/rewriter/matchtoterm/TermFieldRewriter.java b/src/main/java/com/amazon/opendistroforelasticsearch/sql/rewriter/matchtoterm/TermFieldRewriter.java
index 68af948bfc..ce9fbee134 100644
--- a/src/main/java/com/amazon/opendistroforelasticsearch/sql/rewriter/matchtoterm/TermFieldRewriter.java
+++ b/src/main/java/com/amazon/opendistroforelasticsearch/sql/rewriter/matchtoterm/TermFieldRewriter.java
@@ -73,7 +73,7 @@ public boolean visit(MySqlSelectQueryBlock query) {
         collect(query.getFrom(), indexToType, curScope().getAliases());
         curScope().setMapper(getMappings(indexToType));
         if ((this.filterType == TermRewriterFilter.COMMA || this.filterType == TermRewriterFilter.MULTI_QUERY)
-            && !hasUnknownIndex(curScope())) {
+            && hasUnknownIndex(curScope())) {
             throw new VerificationException("Unknown index " + indexToType.keySet());
         }
         return true;
@@ -212,13 +212,13 @@ public boolean isValidIdentifierForTerm(SQLIdentifierExpr expr) {
 
     public boolean hasUnknownIndex(TermFieldScope scope) {
         if (scope.getMapper().isEmpty()) {
-            return false;
+            return true;
         }
 
         // We need finalMapping to lookup for rewriting
         FieldMappings fieldMappings = curScope().getMapper().firstMapping().firstMapping();
         curScope().setFinalMapping(fieldMappings);
-        return true;
+        return false;
     }
 
     public IndexMappings getMappings(Map<String, String> indexToType) {
diff --git a/src/test/java/com/amazon/opendistroforelasticsearch/sql/esintgtest/TermQueryExplainIT.java b/src/test/java/com/amazon/opendistroforelasticsearch/sql/esintgtest/TermQueryExplainIT.java
index a31952a96b..93e6a047fd 100644
--- a/src/test/java/com/amazon/opendistroforelasticsearch/sql/esintgtest/TermQueryExplainIT.java
+++ b/src/test/java/com/amazon/opendistroforelasticsearch/sql/esintgtest/TermQueryExplainIT.java
@@ -101,21 +101,6 @@ public void testNonResolvingIndexPatternWithNonExistingIndex() throws IOExceptio
         }
     }
 
-    @Test
-    @Ignore("allow non-identical mapping when query multi-index")
-    public void testNonIdenticalMappings() throws IOException {
-        try {
-            explainQuery(String.format(Locale.ROOT, "SELECT firstname, birthdate FROM %s, %s " +
-                            "WHERE firstname = 'Leo' OR male = 'true'",
-                    TEST_INDEX_BANK, TEST_INDEX_ONLINE));
-        } catch (ResponseException e) {
-            assertThat(e.getResponse().getStatusLine().getStatusCode(), equalTo(RestStatus.BAD_REQUEST.getStatus()));
-            final String entity = TestUtils.getResponseBody(e.getResponse());
-            assertThat(entity, containsString("When using multiple indices, the mappings must be identical"));
-            assertThat(entity, containsString("\"type\": \"VerificationException\""));
-        }
-    }
-
     @Test
     public void testAllowNonIdenticalMappings() throws IOException {
         String result = explainQuery(String.format(Locale.ROOT, "SELECT firstname, birthdate FROM %s, %s " +