diff --git a/mem/mem_windows.go b/mem/mem_windows.go
index 522cfd1b3..a94b61f4b 100644
--- a/mem/mem_windows.go
+++ b/mem/mem_windows.go
@@ -82,6 +82,8 @@ func SwapMemoryWithContext(ctx context.Context) (*SwapMemoryStat, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer common.PdhCloseQuery.Call(uintptr(counter.Query))
+
 	usedPercent, err := counter.GetValue()
 	if err != nil {
 		return nil, err