diff --git a/src/finn/transformation/fpgadataflow/vitis_build.py b/src/finn/transformation/fpgadataflow/vitis_build.py
index 864f8d06d8a581041476a58c45187cd99bb9c062..c37e1081691b562ba2c0cb84cff44a024ae8c1c2 100644
--- a/src/finn/transformation/fpgadataflow/vitis_build.py
+++ b/src/finn/transformation/fpgadataflow/vitis_build.py
@@ -282,7 +282,7 @@ class VitisLink(Transformation):
                     " ".join(object_files),
                     self.f_mhz,
                     self.strategy.value,
-                    debug_commands,
+                    " ".join(debug_commands),
                 )
             )
             f.write("cd {}\n".format(working_dir))