diff --git a/deltachat-ffi/deltachat.h b/deltachat-ffi/deltachat.h
index e15d02bca..3695fa44b 100644
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -443,6 +443,8 @@ char*           dc_get_info                  (dc_context_t* context);
 char*           dc_get_oauth2_url            (dc_context_t* context, const char* addr, const char* redirect_uri);
 
 /**
+ * @class dc_provider_t
+ *
  * Opaque object containing information about one single email provider.
  */
 typedef struct _dc_provider  dc_provider_t;
@@ -450,7 +452,8 @@ typedef struct _dc_provider  dc_provider_t;
 /**
  * Create a provider struct for the given domain.
  *
- * @param doamin The domain to get provider info for.
+ * @memberof dc_provider_t
+ * @param domain The domain to get provider info for.
  * @return a dc_provider_t struct which can be used with the dc_provider_get_*
  *     accessor functions.  If no provider info is found, NULL will be
  *     returned.
@@ -462,6 +465,7 @@ dc_provider_t*  dc_provider_new_from_domain           (char* domain);
  *
  * The provider is extracted from the email address and it's information is returned.
  *
+ * @memberof dc_provider_t
  * @param email The user's email address to extract the provider info form.
  * @return a dc_provider_t struct which can be used with the dc_provider_get_*
  *     accessor functions.  If no provider info is found, NULL will be
@@ -474,6 +478,7 @@ dc_provider_t*  dc_provider_new_from_email            (char* email);
  *
  * This URL allows linking to the providers page on providers.delta.chat.
  *
+ * @memberof dc_provider_t
  * @param provider The dc_provider_t struct.
  * @return A string which must be free()d.
  */
@@ -484,6 +489,7 @@ char*           dc_provider_get_overview_page         (const dc_provider_t* prov
  *
  * The name of the provider, e.g. "POSTEO".
  *
+ * @memberof dc_provider_t
  * @param provider The dc_provider_t struct.
  * @return A string which must be free()d.
  */
@@ -493,8 +499,9 @@ char*           dc_provider_get_name                  (const dc_provider_t* prov
  * The markdown content of the providers page.
  *
  * This contains the preparation steps or additional information if the status
- * is DC_PROVIDER_STATUS_BROKEN.
+ * is @ref DC_PROVIDER_STATUS_BROKEN.
  *
+ * @memberof dc_provider_t
  * @param provider The dc_provider_t struct.
  * @return A string which must be free()d.
  */
@@ -505,6 +512,7 @@ char*           dc_provider_get_markdown              (const dc_provider_t* prov
  *
  * This is returned as a string.
  *
+ * @memberof dc_provider_t
  * @param provider The dc_provider_t struct.
  * @return A string which must be free()d.
  */
@@ -516,6 +524,7 @@ char*           dc_provider_get_status_date           (const dc_provider_t* prov
  * Can be one of @ref DC_PROVIDER_STATUS_OK, @ref
  * DC_PROVIDER_STATUS_PREPARATION and @ref DC_PROVIDER_STATUS_BROKEN.
  *
+ * @memberof dc_provider_t
  * @param provider The dc_provider_t struct.
  * @return The status as a constant number.
  */
@@ -524,10 +533,21 @@ int             dc_provider_get_status                (const dc_provider_t* prov
 /**
  * Free the provider info struct.
  *
+ * @memberof dc_provider_t
  * @param provider The dc_provider_t struct.
  */
 void            dc_provider_unref                     (const dc_provider_t* provider);
 
+
+/**
+ * @defgroup DC_PROVIDER_STATUS DC_PROVIDER_STATUS
+ *
+ * These constants are used as return values for dc_provider_get_status().
+ *
+ * @addtogroup DC_PROVIDER_STATUS
+ * @{
+ */
+
 /**
  * Provider status returned by dc_provider_get_status().
  *
@@ -549,6 +569,11 @@ void            dc_provider_unref                     (const dc_provider_t* prov
  */
 #define         DC_PROVIDER_STATUS_BROKEN       3
 
+/**
+ * @}
+ */
+
+
 // connect
 
 /**