diff --git a/src/Background/Background.vala b/src/Background/Background.vala
index ff449109..4ddb2bc5 100644
--- a/src/Background/Background.vala
+++ b/src/Background/Background.vala
@@ -99,7 +99,7 @@ namespace Gala {
 
             Idle.add (() => {
                 loaded ();
-                return false;
+                return Source.REMOVE;
             });
         }
 
@@ -209,7 +209,7 @@ namespace Gala {
             update_animation_timeout_id = Timeout.add (interval, () => {
                 update_animation_timeout_id = 0;
                 update_animation ();
-                return false;
+                return Source.REMOVE;
             });
         }
 
diff --git a/src/Background/BackgroundCache.vala b/src/Background/BackgroundCache.vala
index 77ab1ae6..03b63188 100644
--- a/src/Background/BackgroundCache.vala
+++ b/src/Background/BackgroundCache.vala
@@ -63,7 +63,7 @@ namespace Gala {
             if (animation != null && animation.filename == filename) {
                 Idle.add (() => {
                     get_animation.callback ();
-                    return false;
+                    return Source.REMOVE;
                 });
                 yield;
 
@@ -76,7 +76,7 @@ namespace Gala {
 
             Idle.add (() => {
                 get_animation.callback ();
-                return false;
+                return Source.REMOVE;
             });
             yield;