diff --git a/src/matrix-c-types.c b/src/matrix-c-types.c
index ac7fa77..66df662 100644
--- a/src/matrix-c-types.c
+++ b/src/matrix-c-types.c
@@ -267,3 +267,12 @@ G_DEFINE_QUARK(matrix-error-quark, matrix_error);
  *
  * Room history visibility
  */
+
+/**
+ * MatrixGuestAccess:
+ * @MATRIX_GUEST_ACCESS_UNKNOWN: represents a value unknown to this library
+ * @MATRIX_GUEST_ACCESS_CAN_JOIN: guest users are allowed to access the room
+ * @MATRIX_GUEST_ACCESS_FORBIDDEN: guest users are not allowed to access the room
+ *
+ * Room guest access
+ */
diff --git a/src/matrix-c-types.h b/src/matrix-c-types.h
index ef57f01..97ae244 100644
--- a/src/matrix-c-types.h
+++ b/src/matrix-c-types.h
@@ -179,4 +179,10 @@ typedef enum {
     MATRIX_HISTORY_VISIBILITY_WORLD_READABLE
 } MatrixHistoryVisibility;
 
+typedef enum {
+    MATRIX_GUEST_ACCESS_UNKNOWN,
+    MATRIX_GUEST_ACCESS_CAN_JOIN,
+    MATRIX_GUEST_ACCESS_FORBIDDEN
+} MatrixGuestAccess;
+
 #endif  /* __MATRIX_TYPE_H__ */
diff --git a/src/matrix-types.vala b/src/matrix-types.vala
index 15c1af3..3a038f1 100644
--- a/src/matrix-types.vala
+++ b/src/matrix-types.vala
@@ -17,26 +17,6 @@
  */
 
 namespace Matrix {
-    /**
-     * Room guest access
-     */
-    public enum GuestAccess {
-        /**
-         * represents a value unknown to this library
-         */
-        UNKNOWN,
-
-        /**
-         * guest users are allowed to access the room
-         */
-        CAN_JOIN,
-
-        /**
-         * guest users are not allowed to access the room
-         */
-        FORBIDDEN;
-    }
-
     /**
      * Call offer types
      */
diff --git a/vapi/c-api.vapi b/vapi/c-api.vapi
index 641dfcb..5518888 100644
--- a/vapi/c-api.vapi
+++ b/vapi/c-api.vapi
@@ -185,6 +185,13 @@ namespace Matrix {
         WORLD_READABLE;
     }
 
+    [CCode (cheader_filename = "matrix-enumtypes.h", cprefix = "MATRIX_GUEST_ACCESS_")]
+    public enum GuestAccess {
+        UNKNOWN,
+        CAN_JOIN,
+        FORBIDDEN;
+    }
+
     /**
      * The major version number of the Matrix.org GLib SDK.
      */