diff --git a/projects/common/rfsom/rfsom_system_bd.tcl b/projects/common/rfsom/rfsom_system_bd.tcl
index 326662869b..3173696102 100644
--- a/projects/common/rfsom/rfsom_system_bd.tcl
+++ b/projects/common/rfsom/rfsom_system_bd.tcl
@@ -129,6 +129,7 @@ set_property -dict [list CONFIG.C_OPERATION {not}] $sys_logic_inv
 
 set axi_hdmi_clkgen [create_bd_cell -type ip -vlnv analog.com:user:axi_clkgen:1.0 axi_hdmi_clkgen]
 set axi_hdmi_core [create_bd_cell -type ip -vlnv analog.com:user:axi_hdmi_tx:1.0 axi_hdmi_core]
+set_property -dict [list CONFIG.OUT_CLK_POLARITY {1}] $axi_hdmi_core
 
 set axi_hdmi_dma [create_bd_cell -type ip -vlnv xilinx.com:ip:axi_vdma:6.2 axi_hdmi_dma]
 set_property -dict [list CONFIG.c_m_axis_mm2s_tdata_width {64}] $axi_hdmi_dma