diff --git a/src/matrix-c-types.c b/src/matrix-c-types.c
index 0a2b6f9..bef62fb 100644
--- a/src/matrix-c-types.c
+++ b/src/matrix-c-types.c
@@ -162,3 +162,12 @@ G_DEFINE_QUARK(matrix-error-quark, matrix_error);
  *
  * Receipt types of acknowledgment.
  */
+
+/**
+ * MatrixResizeMethod:
+ * @MATRIX_RESIZE_METHOD_DEFAULT: use the server default value
+ * @MATRIX_RESIZE_METHOD_CROP: crop thumbnail to the requested size
+ * @MATRIX_RESIZE_METHOD_SCALE: scale thumbnail to the requested size
+ *
+ * Resizing methods for matrix_api_media_thumbnail().
+ */
diff --git a/src/matrix-c-types.h b/src/matrix-c-types.h
index d0fec31..8f837a0 100644
--- a/src/matrix-c-types.h
+++ b/src/matrix-c-types.h
@@ -118,4 +118,10 @@ typedef enum {
     MATRIX_RECEIPT_TYPE_READ
 } MatrixReceiptType;
 
+typedef enum {
+    MATRIX_RESIZE_METHOD_DEFAULT,
+    MATRIX_RESIZE_METHOD_CROP,
+    MATRIX_RESIZE_METHOD_SCALE
+} MatrixResizeMethod;
+
 #endif  /* __MATRIX_TYPE_H__ */
diff --git a/src/matrix-types.vala b/src/matrix-types.vala
index c5c8fe2..ba2d39d 100644
--- a/src/matrix-types.vala
+++ b/src/matrix-types.vala
@@ -17,26 +17,6 @@
  */
 
 namespace Matrix {
-    /**
-     * Resizing methods for matrix_api_media_thumbnail().
-     */
-    public enum ResizeMethod {
-        /**
-         * use the server default value
-         */
-        DEFAULT,
-
-        /**
-         * crop thumbnail to the requested size
-         */
-        CROP,
-
-        /**
-         * scale thumbnail to the requested size
-         */
-        SCALE;
-    }
-
     /**
      * Room membership types.
      */
diff --git a/vapi/c-api.vapi b/vapi/c-api.vapi
index 2e45c81..2911543 100644
--- a/vapi/c-api.vapi
+++ b/vapi/c-api.vapi
@@ -115,6 +115,13 @@ namespace Matrix {
         READ;
     }
 
+    [CCode (cheader_filename = "matrix-enumtypes.h", cprefix = "MATRIX_RESIZE_METHOD_")]
+    public enum ResizeMethod {
+        DEFAULT,
+        CROP,
+        SCALE;
+    }
+
     /**
      * The major version number of the Matrix.org GLib SDK.
      */