diff --git a/monkey/infection_monkey/system_info/collectors/environment_collector.py b/monkey/infection_monkey/system_info/collectors/environment_collector.py
index c679e04f7..ac5a5433d 100644
--- a/monkey/infection_monkey/system_info/collectors/environment_collector.py
+++ b/monkey/infection_monkey/system_info/collectors/environment_collector.py
@@ -1,8 +1,5 @@
 from common.cloud.all_instances import get_all_cloud_instances
-from common.cloud.aws.aws_instance import AwsInstance
-from common.cloud.azure.azure_instance import AzureInstance
-from common.cloud.environment_names import ON_PREMISE, AZURE, AWS
-from common.cloud.instance import CloudInstance
+from common.cloud.environment_names import ON_PREMISE
 from infection_monkey.system_info.system_info_collector import SystemInfoCollector
 
 
diff --git a/monkey/infection_monkey/system_info/system_info_collector.py b/monkey/infection_monkey/system_info/system_info_collector.py
index f65b4c080..c511c1e86 100644
--- a/monkey/infection_monkey/system_info/system_info_collector.py
+++ b/monkey/infection_monkey/system_info/system_info_collector.py
@@ -6,6 +6,14 @@ import infection_monkey.system_info.collectors
 
 
 class SystemInfoCollector(Plugin, metaclass=ABCMeta):
+    """
+    ABC for system info collection. See system_info_collector_handler for more info. Basically, to implement a new system info
+    collector, inherit from this class in an implementation in the infection_monkey.system_info.collectors class, and override
+    the 'collect' method. Don't forget to parse your results in the Monkey Island and to add the collector to the configuration
+    as well - see monkey_island.cc.services.processing.system_info_collectors for examples.
+
+    See the Wiki page "How to add a new System Info Collector to the Monkey?" for a detailed guide.
+    """
     def __init__(self, name="unknown"):
         self.name = name
 
diff --git a/monkey/infection_monkey/system_info/system_info_collectors_handler.py b/monkey/infection_monkey/system_info/system_info_collectors_handler.py
index 792024b12..cc007ff86 100644
--- a/monkey/infection_monkey/system_info/system_info_collectors_handler.py
+++ b/monkey/infection_monkey/system_info/system_info_collectors_handler.py
@@ -21,6 +21,7 @@ class SystemInfoCollectorsHandler(object):
                 system_info_telemetry[collector.name] = collected_info
                 successful_collections += 1
             except Exception as e:
+                # If we failed one collector, no need to stop execution. Log and continue.
                 LOG.error("Collector {} failed. Error info: {}".format(collector.name, e))
         LOG.info("All system info collectors executed. Total {} executed, out of which {} collected successfully.".
                  format(len(self.collectors_list), successful_collections))