diff --git a/net_nex_input.cc b/net_nex_input.cc
index 97211b00d..fa2d9ecfc 100644
--- a/net_nex_input.cc
+++ b/net_nex_input.cc
@@ -324,6 +324,7 @@ NexusSet* NetBlock::nex_input(bool rem_out)
            from other statements. They aren't really inputs
            to the block, just internal intermediate values. */
       if (rem_out) result->rem(*prev);
+      delete prev;
 
       return result;
 }