diff --git a/lib/spack/spack/repo_migrate.py b/lib/spack/spack/repo_migrate.py
index 3827254a609..6592ff04a87 100644
--- a/lib/spack/spack/repo_migrate.py
+++ b/lib/spack/spack/repo_migrate.py
@@ -361,7 +361,7 @@ def migrate_v2_imports(
 
                     if is_import:
                         if isinstance(child, (ast.stmt, ast.expr)):
-                            best_line = (child.end_lineno or child.lineno) + 1
+                            best_line = (getattr(child, "end_lineno", None) or child.lineno) + 1
 
                     if not seen_import and is_import:
                         seen_import = True