diff --git a/hyper.h b/hyper.h
index 18dc7e46..66104465 100644
--- a/hyper.h
+++ b/hyper.h
@@ -177,7 +177,7 @@ void addMessage(string s, char spamtype = 0);
 // Dry Forest burning, heat transfer, etc. are performed on the whole universe
 #define doall (closed_or_bounded)
 
-#define sphere_narcm (sphere && !arcm::in())
+#define sphere_narcm (sphere && !arcm::in() && !arb::in())
 
 #define a4 (S3 == 4)
 #define a45 (S3 == 4 && S7 == 5)