diff --git a/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractScriptMappedFieldType.java b/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractScriptMappedFieldType.java
index 520a85ed9f095..ffaec996e7480 100644
--- a/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractScriptMappedFieldType.java
+++ b/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractScriptMappedFieldType.java
@@ -91,6 +91,7 @@ protected abstract Query rangeQuery(
         QueryShardContext context
     );
 
+    @Override
     public Query fuzzyQuery(
         Object value,
         Fuzziness fuzziness,
@@ -102,17 +103,21 @@ public Query fuzzyQuery(
         throw new IllegalArgumentException(unsupported("fuzzy", "keyword and text"));
     }
 
+    @Override
     public Query prefixQuery(String value, MultiTermQuery.RewriteMethod method, QueryShardContext context) {
         throw new IllegalArgumentException(unsupported("prefix", "keyword, text and wildcard"));
     }
 
+    @Override
     public Query wildcardQuery(String value, MultiTermQuery.RewriteMethod method, QueryShardContext context) {
         throw new IllegalArgumentException(unsupported("wildcard", "keyword, text and wildcard"));
     }
 
+    @Override
     public Query regexpQuery(
         String value,
-        int flags,
+        int syntaxFlags,
+        int matchFlags,
         int maxDeterminizedStates,
         MultiTermQuery.RewriteMethod method,
         QueryShardContext context
@@ -120,20 +125,25 @@ public Query regexpQuery(
         throw new IllegalArgumentException(unsupported("regexp", "keyword and text"));
     }
 
+    @Override
     public abstract Query existsQuery(QueryShardContext context);
 
+    @Override
     public Query phraseQuery(TokenStream stream, int slop, boolean enablePositionIncrements) throws IOException {
         throw new IllegalArgumentException(unsupported("phrase", "text"));
     }
 
+    @Override
     public Query multiPhraseQuery(TokenStream stream, int slop, boolean enablePositionIncrements) throws IOException {
         throw new IllegalArgumentException(unsupported("phrase", "text"));
     }
 
+    @Override
     public Query phrasePrefixQuery(TokenStream stream, int slop, int maxExpansions) throws IOException {
         throw new IllegalArgumentException(unsupported("phrase prefix", "text"));
     }
 
+    @Override
     public SpanQuery spanPrefixQuery(String value, SpanMultiTermQueryWrapper.SpanRewriteMethod method, QueryShardContext context) {
         throw new IllegalArgumentException(unsupported("span prefix", "text"));
     }
diff --git a/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldType.java b/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldType.java
index 3341f7c4ed00c..39926e21a113f 100644
--- a/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldType.java
+++ b/x-pack/plugin/runtime-fields/src/main/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldType.java
@@ -127,9 +127,19 @@ public Query rangeQuery(
     }
 
     @Override
-    public Query regexpQuery(String value, int flags, int maxDeterminizedStates, RewriteMethod method, QueryShardContext context) {
+    public Query regexpQuery(
+        String value,
+        int syntaxFlags,
+        int matchFlags,
+        int maxDeterminizedStates,
+        RewriteMethod method,
+        QueryShardContext context
+    ) {
         checkAllowExpensiveQueries(context);
-        return new StringScriptFieldRegexpQuery(script, leafFactory(context.lookup()), name(), value, flags, maxDeterminizedStates);
+        if (matchFlags != 0) {
+            throw new IllegalArgumentException("Match flags not yet implemented [" + matchFlags + "]");
+        }
+        return new StringScriptFieldRegexpQuery(script, leafFactory(context.lookup()), name(), value, syntaxFlags, maxDeterminizedStates);
     }
 
     @Override
diff --git a/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractNonTextScriptMappedFieldTypeTestCase.java b/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractNonTextScriptMappedFieldTypeTestCase.java
index 602d84310b761..8c56984824154 100644
--- a/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractNonTextScriptMappedFieldTypeTestCase.java
+++ b/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/AbstractNonTextScriptMappedFieldTypeTestCase.java
@@ -28,7 +28,7 @@ public void testPrefixQueryIsError() throws IOException {
     public void testRegexpQueryIsError() throws IOException {
         assertQueryOnlyOnTextAndKeyword(
             "regexp",
-            () -> simpleMappedFieldType().regexpQuery("cat", 0, Operations.DEFAULT_MAX_DETERMINIZED_STATES, null, mockContext())
+            () -> simpleMappedFieldType().regexpQuery("cat", 0, 0, Operations.DEFAULT_MAX_DETERMINIZED_STATES, null, mockContext())
         );
     }
 
diff --git a/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldTypeTests.java b/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldTypeTests.java
index 587dceee5528c..ab8688d88a191 100644
--- a/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldTypeTests.java
+++ b/x-pack/plugin/runtime-fields/src/test/java/org/elasticsearch/xpack/runtimefields/mapper/ScriptKeywordMappedFieldTypeTests.java
@@ -249,7 +249,7 @@ public void testRegexpQuery() throws IOException {
                 IndexSearcher searcher = newSearcher(reader);
                 assertThat(
                     searcher.count(
-                        simpleMappedFieldType().regexpQuery("ca.+", 0, Operations.DEFAULT_MAX_DETERMINIZED_STATES, null, mockContext())
+                        simpleMappedFieldType().regexpQuery("ca.+", 0, 0, Operations.DEFAULT_MAX_DETERMINIZED_STATES, null, mockContext())
                     ),
                     equalTo(2)
                 );
@@ -258,7 +258,7 @@ public void testRegexpQuery() throws IOException {
     }
 
     public void testRegexpQueryIsExpensive() throws IOException {
-        checkExpensiveQuery((ft, ctx) -> ft.regexpQuery(randomAlphaOfLengthBetween(1, 1000), randomInt(0xFFFF), randomInt(), null, ctx));
+        checkExpensiveQuery((ft, ctx) -> ft.regexpQuery(randomAlphaOfLengthBetween(1, 1000), randomInt(0xFFFF), 0, randomInt(), null, ctx));
     }
 
     @Override