diff --git a/packages/deps/deps-utils.js b/packages/deps/deps-utils.js
index cf39e39d6a..2a8d748c7f 100644
--- a/packages/deps/deps-utils.js
+++ b/packages/deps/deps-utils.js
@@ -105,7 +105,7 @@
           try {
             f();
           } catch (e) {
-            Meteor._debug("Exception from Meteor._atFlush:", e);
+            Meteor._debug("Exception from Meteor._atFlush:", e.stack);
           }
         }
         atFlushContext = null;
diff --git a/packages/livedata/livedata_connection.js b/packages/livedata/livedata_connection.js
index ec662c8785..083e8d0149 100644
--- a/packages/livedata/livedata_connection.js
+++ b/packages/livedata/livedata_connection.js
@@ -365,7 +365,7 @@ _.extend(Meteor._LivedataConnection.prototype, {
       // go to log.
       if (exception && !exception.expected)
         Meteor._debug("Exception while simulating the effect of invoking '" +
-                      name + "'", exception.stack);
+                      name + "'", exception, exception.stack);
     }
 
     // At this point we're definitely doing an RPC, and we're going to