diff --git a/README.md b/README.md
index f1f0dd46..965d1f23 100644
--- a/README.md
+++ b/README.md
@@ -9,11 +9,15 @@ Prometheus exporter for Windows machines, using the WMI (Windows Management Inst
 
 ## Collectors
 
-Name     | Description
----------|-------------
-os | [Win32_OperatingSystem](https://msdn.microsoft.com/en-us/library/aa394239) metrics (memory, processes, users)
-logical_disk | [Win32_PerfRawData_PerfDisk_LogicalDisk](https://msdn.microsoft.com/en-us/windows/hardware/aa394307(v=vs.71)) metrics (disk I/O)
-iis | [Win32_PerfRawData_W3SVC_WebService](https://msdn.microsoft.com/en-us/library/aa394345) IIS metrics
+Name     | Description | Enabled by default
+---------|-------------|--------------------
+cpu | [Win32_PerfRawData_PerfOS_Processor](https://msdn.microsoft.com/en-us/library/aa394317(v=vs.90).aspx) metrics (cpu usage) | ✓
+cs | [Win32_ComputerSystem](https://msdn.microsoft.com/en-us/library/aa394102) metrics (system properties, num cpus/total memory) | ✓
+iis | [Win32_PerfRawData_W3SVC_WebService](https://msdn.microsoft.com/en-us/library/aa394345) IIS metrics |
+logical_disk | [Win32_PerfRawData_PerfDisk_LogicalDisk](https://msdn.microsoft.com/en-us/windows/hardware/aa394307(v=vs.71)) metrics (disk I/O) | ✓
+net | [Win32_PerfRawData_Tcpip_NetworkInterface](https://technet.microsoft.com/en-us/security/aa394340(v=vs.80)) metrics (network interface I/O) | ✓
+os | [Win32_OperatingSystem](https://msdn.microsoft.com/en-us/library/aa394239) metrics (memory, processes, users) | ✓
+system | Win32_PerfRawData_PerfOS_System metrics (system calls) | ✓
 
 The HELP texts shows the WMI data source, please see MSDN documentation for details.
 
diff --git a/exporter.go b/exporter.go
index ea03b368..9fa30f71 100644
--- a/exporter.go
+++ b/exporter.go
@@ -25,7 +25,7 @@ type WmiCollector struct {
 }
 
 const (
-	defaultCollectors = "cpu,logical_disk,net,os"
+	defaultCollectors = "cpu,cs,logical_disk,net,os,system"
 	serviceName       = "wmi_exporter"
 )