diff --git a/project.py b/project.py
index 73263d9..8d18e25 100644
--- a/project.py
+++ b/project.py
@@ -2411,9 +2411,7 @@
             # throws an error.
             revs = [f"{self.revisionExpr}^0"]
             upstream_rev = None
-
-            # Only check upstream when using superproject.
-            if self.upstream and self.use_superproject:
+            if self.upstream:
                 upstream_rev = self.GetRemote().ToLocal(self.upstream)
                 revs.append(upstream_rev)
 
@@ -2425,9 +2423,7 @@
                 log_as_error=False,
             )
 
-            # Only verify upstream relationship for superproject scenarios
-            # without affecting plain usage.
-            if self.upstream and self.use_superproject:
+            if self.upstream:
                 self.bare_git.merge_base(
                     "--is-ancestor",
                     self.revisionExpr,