diff --git a/module_build_service/web/mse.py b/module_build_service/web/mse.py
index e6704600..7ae4fc19 100644
--- a/module_build_service/web/mse.py
+++ b/module_build_service/web/mse.py
@@ -119,8 +119,8 @@ def _get_mmds_from_requires(
                 for base_module_mmd in base_module_mmds:
                     # Group base module streams by major version
                     base_stream = base_module_mmd.get_stream_name()
-                    base_stream_version = int(models.ModuleBuild.get_stream_version(base_stream))
-                    x = base_stream_version // 10000
+                    base_stream_version = models.ModuleBuild.get_stream_version(base_stream)
+                    x = int(base_stream_version) // 10000
                     # tuple (base_stream_version, mmd) used for sorting
                     base_module_streams.setdefault(x, []).append(
                         (base_stream_version, base_module_mmd))