diff --git a/metafix/src/main/java/org/metafacture/metafix/FixMethod.java b/metafix/src/main/java/org/metafacture/metafix/FixMethod.java
index de08a724..3a9634f5 100644
--- a/metafix/src/main/java/org/metafacture/metafix/FixMethod.java
+++ b/metafix/src/main/java/org/metafacture/metafix/FixMethod.java
@@ -281,6 +281,12 @@ public void apply(final Metafix metafix, final Record record, final List<String>
             });
         }
     },
+    index {
+        public void apply(final Metafix metafix, final Record record, final List<String> params, final Map<String, String> options) {
+            final String search = params.get(1);
+            record.transformFields(params, s -> String.valueOf(s.indexOf(search))); // TODO: multiple
+        }
+    },
     lookup {
         public void apply(final Metafix metafix, final Record record, final List<String> params, final Map<String, String> options) {
             final Map<String, String> map;
diff --git a/metafix/src/test/java/org/metafacture/metafix/MetafixMethodTest.java b/metafix/src/test/java/org/metafacture/metafix/MetafixMethodTest.java
index 040bbd99..49f23cca 100644
--- a/metafix/src/test/java/org/metafacture/metafix/MetafixMethodTest.java
+++ b/metafix/src/test/java/org/metafacture/metafix/MetafixMethodTest.java
@@ -607,6 +607,24 @@ public void shouldFilterArrayValuesInverted() {
         );
     }
 
+    @Test
+    public void shouldGetIndexOfSubstring() {
+        MetafixTestHelpers.assertFix(streamReceiver, Arrays.asList(
+                "index(title, 't')"
+            ),
+            i -> {
+                i.startRecord("1");
+                i.literal("title", "metafix");
+                i.endRecord();
+            },
+            o -> {
+                o.get().startRecord("1");
+                o.get().literal("title", "2");
+                o.get().endRecord();
+            }
+        );
+    }
+
     private void assertThrows(final Class<?> expectedClass, final String expectedMessage, final Executable executable) {
         final Throwable exception = Assertions.assertThrows(MetafactureException.class, executable).getCause();
         Assertions.assertSame(expectedClass, exception.getClass());