diff --git a/library/axi_ad9434/axi_ad9434_if.v b/library/axi_ad9434/axi_ad9434_if.v
index bb4da7915..1d30a232c 100644
--- a/library/axi_ad9434/axi_ad9434_if.v
+++ b/library/axi_ad9434/axi_ad9434_if.v
@@ -152,7 +152,8 @@ module axi_ad9434_if (
     .IODELAY_CTRL(0),
     .IODELAY_GROUP(IO_DELAY_GROUP),
     .DDR_OR_SDR_N(SDR),
-    .DATA_WIDTH(12))
+    .DATA_WIDTH(12),
+    .SERDES_FACTOR(4))
   i_adc_data (
     .rst(adc_rst),
     .clk(adc_clk_in),
@@ -184,7 +185,8 @@ module axi_ad9434_if (
     .IODELAY_CTRL(1),
     .IODELAY_GROUP(IO_DELAY_GROUP),
     .DDR_OR_SDR_N(SDR),
-    .DATA_WIDTH(1))
+    .DATA_WIDTH(1),
+    .SERDES_FACTOR(4))
   i_adc_or (
     .rst(adc_rst),
     .clk(adc_clk_in),
@@ -217,7 +219,8 @@ module axi_ad9434_if (
     .MMCM_VCO_DIV (6),
     .MMCM_VCO_MUL (12),
     .MMCM_CLK0_DIV (2),
-    .MMCM_CLK1_DIV (8))
+    .MMCM_CLK1_DIV (8),
+    .SERDES_FACTOR(4))
   i_serdes_clk (
     .rst (mmcm_rst),
     .clk_in_p (adc_clk_in_p),