Fixed sleeping monitors being excluded from list.

Closes #430.
diff --git a/README.md b/README.md
index 2342dd5..338b349 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,7 @@
  - Bugfix: `glfwSetTime` silently accepted invalid values
  - [Cocoa] Bugfix: `NSHighResolutionCapable` was not enabled for test and
                    example programs
+ - [Cocoa] Bugfix: Sleeping monitors were not included in the monitor list
  - [Cocoa] Bugfix: `glfwSetWindowSize` did not change the video mode for full
                    screen windows
  - [X11] Added support for Cygwin-X
diff --git a/src/cocoa_monitor.m b/src/cocoa_monitor.m
index 9b8d3b0..f75347d 100644
--- a/src/cocoa_monitor.m
+++ b/src/cocoa_monitor.m
@@ -264,9 +264,6 @@
     {
         int j;
 
-        if (CGDisplayIsAsleep(displays[i]))
-            continue;
-
         CGDirectDisplayID screenDisplayID = CGDisplayMirrorsDisplay(displays[i]);
         if (screenDisplayID == kCGNullDirectDisplay)
             screenDisplayID = displays[i];