diff --git a/Gir_Gst.toml b/Gir_Gst.toml
index a2789b4ce..a818a07f0 100644
--- a/Gir_Gst.toml
+++ b/Gir_Gst.toml
@@ -867,6 +867,11 @@ trait = false
     # Work-around for 1.14 switch from transfer-floating to transfer-full
     ignore = true
 
+    [[object.function]]
+    name = "add_stream"
+    # Ignore return value which is always `true`
+    ignore = true
+
 [[object]]
 name = "Gst.Plugin"
 status = "generate"
diff --git a/gstreamer/src/auto/stream_collection.rs b/gstreamer/src/auto/stream_collection.rs
index 91ba361c2..451c566a8 100644
--- a/gstreamer/src/auto/stream_collection.rs
+++ b/gstreamer/src/auto/stream_collection.rs
@@ -9,7 +9,6 @@ use ffi;
 use glib::GString;
 use glib::StaticType;
 use glib::Value;
-use glib::object::IsA;
 use glib::object::ObjectType;
 use glib::signal::SignalHandlerId;
 use glib::signal::connect_raw;
@@ -28,13 +27,6 @@ glib_wrapper! {
 }
 
 impl StreamCollection {
-    #[cfg(any(feature = "v1_10", feature = "dox"))]
-    pub fn add_stream<P: IsA<Stream>>(&self, stream: &P) -> bool {
-        unsafe {
-            from_glib(ffi::gst_stream_collection_add_stream(self.to_glib_none().0, stream.as_ref().to_glib_full()))
-        }
-    }
-
     #[cfg(any(feature = "v1_10", feature = "dox"))]
     pub fn get_size(&self) -> u32 {
         unsafe {
diff --git a/gstreamer/src/clock.rs b/gstreamer/src/clock.rs
index b084c4f2c..ffc858286 100644
--- a/gstreamer/src/clock.rs
+++ b/gstreamer/src/clock.rs
@@ -39,25 +39,22 @@ unsafe extern "C" fn trampoline_wait_async(
     func: gpointer,
 ) -> gboolean {
     #[cfg_attr(feature = "cargo-clippy", allow(transmute_ptr_to_ref))]
-    let f: &&(Fn(&Clock, ClockTime, &ClockId) -> bool + Send + 'static) = transmute(func);
+    let f: &&(Fn(&Clock, ClockTime, &ClockId) + Send + 'static) = transmute(func);
     f(
         &from_glib_borrow(clock),
         from_glib(time),
         &from_glib_borrow(id),
-    )
-    .to_glib()
+    );
+    glib_ffi::GTRUE
 }
 
 unsafe extern "C" fn destroy_closure_wait_async(ptr: gpointer) {
-    Box::<Box<Fn(&Clock, ClockTime, &ClockId) -> bool + Send + 'static>>::from_raw(ptr as *mut _);
+    Box::<Box<Fn(&Clock, ClockTime, &ClockId) + Send + 'static>>::from_raw(ptr as *mut _);
 }
 
-fn into_raw_wait_async<F: Fn(&Clock, ClockTime, &ClockId) -> bool + Send + 'static>(
-    func: F,
-) -> gpointer {
+fn into_raw_wait_async<F: Fn(&Clock, ClockTime, &ClockId) + Send + 'static>(func: F) -> gpointer {
     #[cfg_attr(feature = "cargo-clippy", allow(type_complexity))]
-    let func: Box<Box<Fn(&Clock, ClockTime, &ClockId) -> bool + Send + 'static>> =
-        Box::new(Box::new(func));
+    let func: Box<Box<Fn(&Clock, ClockTime, &ClockId) + Send + 'static>> = Box::new(Box::new(func));
     Box::into_raw(func) as gpointer
 }
 
@@ -81,7 +78,7 @@ impl ClockId {
 
     pub fn wait_async<F>(&self, func: F) -> Result<ClockSuccess, ClockError>
     where
-        F: Fn(&Clock, ClockTime, &ClockId) -> bool + Send + 'static,
+        F: Fn(&Clock, ClockTime, &ClockId) + Send + 'static,
     {
         let ret: ClockReturn = unsafe {
             from_glib(ffi::gst_clock_id_wait_async(
@@ -269,8 +266,6 @@ mod tests {
         let id = clock.new_single_shot_id(now + 20 * ::MSECOND).unwrap();
         let res = id.wait_async(move |_, _, _| {
             sender.send(()).unwrap();
-
-            true
         });
 
         assert!(res == Ok(ClockSuccess::Ok));
diff --git a/gstreamer/src/stream_collection.rs b/gstreamer/src/stream_collection.rs
index 4cedb030d..7ed579bb2 100644
--- a/gstreamer/src/stream_collection.rs
+++ b/gstreamer/src/stream_collection.rs
@@ -7,6 +7,7 @@
 // except according to those terms.
 
 use ffi;
+use glib::object::IsA;
 use glib::translate::*;
 use Stream;
 use StreamCollection;
@@ -80,6 +81,16 @@ impl StreamCollection {
         }
     }
 
+    #[cfg(any(feature = "v1_10", feature = "dox"))]
+    pub fn add_stream<P: IsA<Stream>>(&self, stream: &P) {
+        unsafe {
+            ffi::gst_stream_collection_add_stream(
+                self.to_glib_none().0,
+                stream.as_ref().to_glib_full(),
+            );
+        }
+    }
+
     pub fn iter(&self) -> Iter {
         Iter::new(self)
     }