diff --git a/gazebo_ros/include/gazebo_ros/gazebo_ros_api_plugin.h b/gazebo_ros/include/gazebo_ros/gazebo_ros_api_plugin.h
index 0177a1dd9..8ef2a981e 100644
--- a/gazebo_ros/include/gazebo_ros/gazebo_ros_api_plugin.h
+++ b/gazebo_ros/include/gazebo_ros/gazebo_ros_api_plugin.h
@@ -138,16 +138,16 @@ class GazeboRosApiPlugin : public SystemPlugin
   /// \brief advertise services
   void advertiseServices();
 
-  /// \brief
+  /// \brief Callback for a subscriber connecting to LinkStates ros topic.
   void onLinkStatesConnect();
 
-  /// \brief
+  /// \brief Callback for a subscriber connecting to ModelStates ros topic.
   void onModelStatesConnect();
 
-  /// \brief
+  /// \brief Callback for a subscriber disconnecting from LinkStates ros topic.
   void onLinkStatesDisconnect();
 
-  /// \brief
+  /// \brief Callback for a subscriber disconnecting from ModelStates ros topic.
   void onModelStatesDisconnect();
 
   /// \brief Function for inserting a URDF into Gazebo from ROS Service Call
diff --git a/gazebo_ros/src/gazebo_ros_api_plugin.cpp b/gazebo_ros/src/gazebo_ros_api_plugin.cpp
index 8fbce410c..b635385f2 100644
--- a/gazebo_ros/src/gazebo_ros_api_plugin.cpp
+++ b/gazebo_ros/src/gazebo_ros_api_plugin.cpp
@@ -578,7 +578,7 @@ void GazeboRosApiPlugin::onLinkStatesDisconnect()
   {
     pub_link_states_event_.reset();
     if (pub_link_states_connection_count_ < 0) // should not be possible
-      ROS_ERROR_NAMED("api_plugin", "One too mandy disconnect from pub_link_states_ in gazebo_ros.cpp? something weird");
+      ROS_ERROR_NAMED("api_plugin", "One too many disconnect from pub_link_states_ in gazebo_ros.cpp? something weird");
   }
 }
 
@@ -589,7 +589,7 @@ void GazeboRosApiPlugin::onModelStatesDisconnect()
   {
     pub_model_states_event_.reset();
     if (pub_model_states_connection_count_ < 0) // should not be possible
-      ROS_ERROR_NAMED("api_plugin", "One too mandy disconnect from pub_model_states_ in gazebo_ros.cpp? something weird");
+      ROS_ERROR_NAMED("api_plugin", "One too many disconnect from pub_model_states_ in gazebo_ros.cpp? something weird");
   }
 }
 
@@ -1091,7 +1091,7 @@ bool GazeboRosApiPlugin::getWorldProperties(gazebo_msgs::GetWorldProperties::Req
   for (unsigned int i = 0; i < world_->GetModelCount(); i ++)
     res.model_names.push_back(world_->GetModel(i)->GetName());
 #endif
-  gzerr << "disablign rendering has not been implemented, rendering is always enabled\n";
+  gzerr << "disabling rendering has not been implemented, rendering is always enabled\n";
   res.rendering_enabled = true; //world->GetRenderEngineEnabled();
   res.success = true;
   res.status_message = "GetWorldProperties: got properties";