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-rw-r--r--lib/pure/asyncdispatch.nim2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/pure/asyncdispatch.nim b/lib/pure/asyncdispatch.nim
index 1e6db2a33..8ba4b5cca 100644
--- a/lib/pure/asyncdispatch.nim
+++ b/lib/pure/asyncdispatch.nim
@@ -534,6 +534,8 @@ when defined(windows) or defined(nimdoc):
         assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
         customOverlapped.data.cb(customOverlapped.data.fd,
             lpNumberOfBytesTransferred, errCode)
+        if customOverlapped.data.cell.data != nil:
+          system.dispose(customOverlapped.data.cell)
         GC_unref(customOverlapped)
       else:
         if errCode.int32 == WAIT_TIMEOUT: