diff --git a/indra/media_plugins/cef/linux_volume_catcher.cpp b/indra/media_plugins/cef/linux_volume_catcher.cpp
index bc1fb38af0..b7dbb02f2c 100755
--- a/indra/media_plugins/cef/linux_volume_catcher.cpp
+++ b/indra/media_plugins/cef/linux_volume_catcher.cpp
@@ -399,7 +399,13 @@ void callback_discovered_sinkinput(pa_context *context, const pa_sink_input_info
     if (0 == eol)
     {
         pa_proplist *proplist = sii->proplist;
-        pid_t sinkpid = atoll(llpa_proplist_gets(proplist, PA_PROP_APPLICATION_PROCESS_ID));
+        const char* str = llpa_proplist_gets(proplist, PA_PROP_APPLICATION_PROCESS_ID);
+        if (!str)
+        {
+            return;
+        }
+
+        pid_t sinkpid = atoll(str);
 
         if (isPluginPid( sinkpid )) // does the discovered sinkinput belong to this process?
         {