diff --git a/nix/build-all.py b/nix/build-all.py
index 8f63612434..756b6b3c1b 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -966,7 +966,7 @@ if "IfcOpenShell-Python" in targets:
 
         logger.info(f"\rBuilding python {python_version} wrapper...   ")
 
-        run([make, f"-j{IFCOS_NUM_BUILD_PROCS}", "_ifcopenshell_wrapper"], cwd=python_dir)
+        run([make, f"-j{IFCOS_NUM_BUILD_PROCS}", "ifcopenshell_wrapper"], cwd=python_dir)
         run([make, "install/local"], cwd=os.path.join(python_dir, "ifcwrap"))
 
         if python_executable: