diff --git a/widget/src/gtk2/nsSound.cpp b/widget/src/gtk2/nsSound.cpp
index 69ff32e..1bdefcd 100644
--- a/widget/src/gtk2/nsSound.cpp
+++ b/widget/src/gtk2/nsSound.cpp
@@ -88,6 +88,7 @@ typedef void (*EsdAudioCloseType) (void);
  */
 typedef struct _ca_context ca_context;
 
+typedef int (*ca_context_set_driver_fn) (ca_context *, const char *);
 typedef int (*ca_context_create_fn) (ca_context **);
 typedef int (*ca_context_destroy_fn) (ca_context *);
 typedef int (*ca_context_play_fn) (ca_context *c,
@@ -96,6 +97,7 @@ typedef int (*ca_context_play_fn) (ca_context *c,
 typedef int (*ca_context_change_props_fn) (ca_context *c,
                                            ...);
 
+static ca_context_set_driver_fn ca_context_set_driver;
 static ca_context_create_fn ca_context_create;
 static ca_context_destroy_fn ca_context_destroy;
 static ca_context_play_fn ca_context_play;
@@ -186,6 +188,7 @@ nsSound::Init()
                 libcanberra = nsnull;
             } else {
                 // at this point we know we have a good libcanberra library
+                ca_context_set_driver = (ca_context_set_driver_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_set_driver");
                 ca_context_destroy = (ca_context_destroy_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_destroy");
                 ca_context_play = (ca_context_play_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_play");
                 ca_context_change_props = (ca_context_change_props_fn) PR_FindFunctionSymbol(libcanberra, "ca_context_change_props");
@@ -476,6 +479,9 @@ NS_IMETHODIMP nsSound::PlayEventSound(PRUint32 aEventId)
             return NS_ERROR_OUT_OF_MEMORY;
         }
 
+
+        ca_context_set_driver(ctx, "alsa");
+
         g_static_private_set(&ctx_static_private, ctx, (GDestroyNotify) ca_context_destroy);
     }