diff --git a/library/axi_ad9739a/axi_ad9739a_core.v b/library/axi_ad9739a/axi_ad9739a_core.v
index 0b254b4a5..d56680ebc 100644
--- a/library/axi_ad9739a/axi_ad9739a_core.v
+++ b/library/axi_ad9739a/axi_ad9739a_core.v
@@ -175,7 +175,7 @@ module axi_ad9739a_core #(
     .dac_status (dac_status),
     .dac_status_ovf (dac_dovf),
     .dac_status_unf (dac_dunf),
-    .dac_clk_ratio (32'd4),
+    .dac_clk_ratio (32'd16),
     .up_drp_sel (),
     .up_drp_wr (),
     .up_drp_addr (),