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-rw-r--r--rts/win32/OSThreads.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/rts/win32/OSThreads.c b/rts/win32/OSThreads.c
index 5167ffc105..4701c344a0 100644
--- a/rts/win32/OSThreads.c
+++ b/rts/win32/OSThreads.c
@@ -511,7 +511,8 @@ KernelThreadId kernelThreadId (void)
/* Win32 threads and synchronisation objects */
-/* A Condition is represented by a Win32 Event object;
+/* A Condition is represented by a Win32 Conditional variable which is a
+ * user-mode object and so incurs no context switching overhead.
* a Mutex by a Mutex kernel object.
*/