diff --git a/litex/build/efinix/ifacewriter.py b/litex/build/efinix/ifacewriter.py
index f4c36fe080..a14d6e7532 100644
--- a/litex/build/efinix/ifacewriter.py
+++ b/litex/build/efinix/ifacewriter.py
@@ -222,6 +222,8 @@ def generate_gpio(self, block, verbose=True):
                 cmd += f'design.set_property("{name}","IN_CLK_PIN","{in_clk_pin}")\n'
                 if "in_delay" in block:
                     cmd += f'design.set_property("{name}","INDELAY","{block["in_delay"]}")\n'
+            if "in_clk_inv" in block:
+                cmd += f'design.set_property("{name}","IS_INCLK_INVERTED","{block["in_clk_inv"]}")\n'
             if prop:
                 for p, val in prop:
                     cmd += 'design.set_property("{}","{}","{}")\n'.format(name, p, val)