diff --git a/lib/sp-visualizer-ticks.c b/lib/sp-visualizer-ticks.c
index fb3b638a..00b27b98 100644
--- a/lib/sp-visualizer-ticks.c
+++ b/lib/sp-visualizer-ticks.c
@@ -34,7 +34,7 @@ struct _SpVisualizerTicks
   gint64 epoch;
   gint64 begin_time;
   gint64 end_time;
-};
+} __attribute__((aligned(8)));
 
 enum {
   TICK_MINUTES,
diff --git a/lib/sp-zoom-manager.c b/lib/sp-zoom-manager.c
index 688b2dd7..61aa4640 100644
--- a/lib/sp-zoom-manager.c
+++ b/lib/sp-zoom-manager.c
@@ -32,7 +32,7 @@ struct _SpZoomManager
   gdouble min_zoom;
   gdouble max_zoom;
   gdouble zoom;
-};
+} __attribute__((aligned(8)));
 
 enum {
   PROP_0,