diff --git a/radio/util/build-firmware.py b/radio/util/build-firmware.py
index 7b5e3ecce6..6c74ef5323 100755
--- a/radio/util/build-firmware.py
+++ b/radio/util/build-firmware.py
@@ -130,6 +130,12 @@ def main():
         cmake_options["MULTI_SPORT"] = "ON"
         firmware_options = options_horus_x10
         maxsize = 2 * 1024 * 1024
+    elif board_name == "x10express":
+        cmake_options["PCB"] = "X10"
+        cmake_options["PCBREV"] = "EXPRESS"
+        cmake_options["MULTI_SPORT"] = "ON"
+        firmware_options = options_horus_x10
+        maxsize = 2 * 1024 * 1024
     elif board_name == "x12s":
         cmake_options["PCB"] = "X12S"
         cmake_options["MULTI_SPORT"] = "ON"