diff --git a/Source/driver/Castro_advance_ctu.cpp b/Source/driver/Castro_advance_ctu.cpp
index f347d35c7a..7f030c1cb6 100644
--- a/Source/driver/Castro_advance_ctu.cpp
+++ b/Source/driver/Castro_advance_ctu.cpp
@@ -205,7 +205,9 @@ Castro::retry_advance_ctu(Real dt, const advance_status& status)
 #endif
 
 #ifdef REACTIONS
-        burn_weights.setVal(0.0);
+        if (castro::store_burn_weights) {
+            burn_weights.setVal(0.0);
+        }
 #endif
 
         // For simplified SDC, we'll have garbage data if we