diff --git a/sys/contrib/dev/acpica/components/executer/exsystem.c b/sys/contrib/dev/acpica/components/executer/exsystem.c
index 23080987c6d..0a48eeb174c 100644
--- a/sys/contrib/dev/acpica/components/executer/exsystem.c
+++ b/sys/contrib/dev/acpica/components/executer/exsystem.c
@@ -338,18 +338,6 @@ AcpiExSystemDoSleep (
 
     AcpiExExitInterpreter ();
 
-    /*
-     * Warn users about excessive sleep times, so ASL code can be improved to
-     * use polling or similar techniques.
-     */
-    if (HowLongMs > 10)
-    {
-        ACPI_WARNING ((AE_INFO,
-            "Firmware issue: Excessive sleep time (0x%8.8X%8.8X ms > 10 ms)"
-            " in ACPI Control Method",
-            ACPI_FORMAT_UINT64 (HowLongMs)));
-    }
-
     /*
      * For compatibility with other ACPI implementations and to prevent
      * accidental deep sleeps, limit the sleep time to something reasonable.