diff --git a/base/sync/rtl/SynchronizerFifo.vhd b/base/sync/rtl/SynchronizerFifo.vhd
index 3e568be1ca..5ce2dc1d58 100644
--- a/base/sync/rtl/SynchronizerFifo.vhd
+++ b/base/sync/rtl/SynchronizerFifo.vhd
@@ -34,7 +34,7 @@ entity SynchronizerFifo is
       INIT_G         : slv                        := "0");
    port (
       -- Asynchronous Reset
-      rst    : in  sl;
+      rst    : in sl := not RST_POLARITY_G;
       -- Write Ports (wr_clk domain)
       wr_clk : in  sl;
       wr_en  : in  sl := '1';