diff --git a/src/matrix-c-types.c b/src/matrix-c-types.c
index 0be7c27..ab01a63 100644
--- a/src/matrix-c-types.c
+++ b/src/matrix-c-types.c
@@ -237,3 +237,19 @@ G_DEFINE_QUARK(matrix-error-quark, matrix_error);
  *
  * Search keys.
  */
+
+/**
+ * MatrixSearchGroupBy:
+ * @MATRIX_SEARCH_GROUP_BY_NONE: no grouping
+ * @MATRIX_SEARCH_GROUP_BY_ROOM_ID: group by room ID
+ * @MATRIX_SEARCH_GROUP_BY_SENDER: group by sender
+ *
+ * Search grouping
+ *
+ * The client can request that the results are returned along with
+ * grouping information, e.g. grouped by room_id. In this case the
+ * response will contain a group entry for each distinct value of
+ * room_id. Each group entry contains at least a list of the
+ * event_ids that are in that group, as well as potentially other
+ * metadata about the group.
+ */
diff --git a/src/matrix-c-types.h b/src/matrix-c-types.h
index c3f49fe..ae6548e 100644
--- a/src/matrix-c-types.h
+++ b/src/matrix-c-types.h
@@ -165,4 +165,10 @@ typedef enum {
     MATRIX_SEARCH_KEY_CONTENT_TOPIC
 } MatrixSearchKey;
 
+typedef enum {
+    MATRIX_SEARCH_GROUP_BY_NONE,
+    MATRIX_SEARCH_GROUP_BY_ROOM_ID,
+    MATRIX_SEARCH_GROUP_BY_SENDER
+} MatrixSearchGroupBy;
+
 #endif  /* __MATRIX_TYPE_H__ */
diff --git a/src/matrix-types.vala b/src/matrix-types.vala
index 93edd99..fbcafa1 100644
--- a/src/matrix-types.vala
+++ b/src/matrix-types.vala
@@ -17,33 +17,6 @@
  */
 
 namespace Matrix {
-    /**
-     * Search grouping
-     *
-     * The client can request that the results are returned along with
-     * grouping information, e.g. grouped by room_id. In this case the
-     * response will contain a group entry for each distinct value of
-     * room_id. Each group entry contains at least a list of the
-     * event_ids that are in that group, as well as potentially other
-     * metadata about the group.
-     */
-    public enum SearchGroupBy {
-        /**
-         * no grouping
-         */
-        NONE,
-
-        /**
-         * group by room ID
-         */
-        ROOM_ID,
-
-        /**
-         * group by sender
-         */
-        SENDER;
-    }
-
     /**
      * Room history visibility
      */
diff --git a/vapi/c-api.vapi b/vapi/c-api.vapi
index 6d8bba6..acece42 100644
--- a/vapi/c-api.vapi
+++ b/vapi/c-api.vapi
@@ -169,6 +169,13 @@ namespace Matrix {
         CONTENT_TOPIC;
     }
 
+    [CCode (cheader_filename = "matrix-enumtypes.h", cprefix = "MATRIX_SEARCH_GROUP_BY_")]
+    public enum SearchGroupBy {
+        NONE,
+        ROOM_ID,
+        SENDER;
+    }
+
     /**
      * The major version number of the Matrix.org GLib SDK.
      */