diff --git a/indra/media_plugins/cef/linux_volume_catcher.cpp b/indra/media_plugins/cef/linux_volume_catcher.cpp
index 43773bb952..2d821f4d60 100755
--- a/indra/media_plugins/cef/linux_volume_catcher.cpp
+++ b/indra/media_plugins/cef/linux_volume_catcher.cpp
@@ -286,7 +286,9 @@ void VolumeCatcherImpl::setVolume(F32 volume)
 
 void VolumeCatcherImpl::pump()
 {
-	return;
+	if (mGotSyms && mMainloop) {
+		llpa_mainloop_iterate(mMainloop, 0, NULL);
+	}
 }
 
 void VolumeCatcherImpl::connected_okay()
diff --git a/indra/media_plugins/cef/linux_volume_catcher_pa_syms.inc b/indra/media_plugins/cef/linux_volume_catcher_pa_syms.inc
index 2c9f760fba..4e65221003 100755
--- a/indra/media_plugins/cef/linux_volume_catcher_pa_syms.inc
+++ b/indra/media_plugins/cef/linux_volume_catcher_pa_syms.inc
@@ -21,5 +21,6 @@ LL_PA_SYM(true, pa_sw_volume_from_linear, pa_volume_t, double v);
 LL_PA_SYM(true, pa_mainloop_free, void, pa_mainloop* m);
 LL_PA_SYM(true, pa_mainloop_get_api, pa_mainloop_api*, pa_mainloop* m);
 LL_PA_SYM(true, pa_mainloop_new, pa_mainloop*, void);
+LL_PA_SYM(true, pa_mainloop_iterate, int, pa_mainloop*, int, int*);
 
 // optional symbols to grab