diff --git a/specs/quint/specs/proofs-in-blocs/proofs.qnt b/specs/quint/specs/proofs-in-blocs/proofs.qnt
index 37f723b7c..3a6530df6 100644
--- a/specs/quint/specs/proofs-in-blocs/proofs.qnt
+++ b/specs/quint/specs/proofs-in-blocs/proofs.qnt
@@ -82,7 +82,7 @@ var num_unproven_blocks: StrandInfo
 
 
 // If a block contains transactions then it is at the very beginning, or the block also contains a proof
-def transactionNeedsProofInv = 
+def payloadImpliesProofInv = 
     chain.last().txs implies chain.last().height < numStrands or chain.last().proof != None
 
 // The number of proofs of empty blocks in a recursive proof is bounded by maxMissingProofs