diff --git a/src/policy/policy.h b/src/policy/policy.h
index 41f6635eea..cd46652efc 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -65,6 +65,12 @@ static constexpr unsigned int DEFAULT_ANCESTOR_SIZE_LIMIT{101};
 static constexpr unsigned int DEFAULT_DESCENDANT_LIMIT{25};
 /** Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants */
 static constexpr unsigned int DEFAULT_DESCENDANT_SIZE_LIMIT{101};
+/**
+ * An extra transaction can be added to a package, as long as it only has one
+ * ancestor and is no larger than this. Not really any reason to make this
+ * configurable as it doesn't materially change DoS parameters.
+ */
+static constexpr unsigned int EXTRA_DESCENDANT_TX_SIZE_LIMIT{10000};
 /**
  * Standard script verification flags that standard transactions will comply
  * with. However scripts violating these flags may still be present in valid
diff --git a/src/validation.cpp b/src/validation.cpp
index 26ce286c63..b775c85912 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -81,12 +81,6 @@ using node::UnlinkPrunedFiles;
 #define MICRO 0.000001
 #define MILLI 0.001
 
-/**
- * An extra transaction can be added to a package, as long as it only has one
- * ancestor and is no larger than this. Not really any reason to make this
- * configurable as it doesn't materially change DoS parameters.
- */
-static const unsigned int EXTRA_DESCENDANT_TX_SIZE_LIMIT = 10000;
 /** Maximum kilobytes for transactions to store for processing during reorg */
 static const unsigned int MAX_DISCONNECTED_TX_POOL_SIZE = 20000;
 /** Time to wait between writing blocks/block index to disk. */