diff --git a/chain/actors/builtin/miner/actor.go.template b/chain/actors/builtin/miner/actor.go.template
index 29f23c17922..2b6415e9f28 100644
--- a/chain/actors/builtin/miner/actor.go.template
+++ b/chain/actors/builtin/miner/actor.go.template
@@ -378,7 +378,7 @@ func PledgePenaltyForContinuedFault(
         {{- end}}
     {{- end}}
     default:
-        return big.Zero(), xerrors.Errorf("unsupported network version: %d", v)
+        return big.Zero(), xerrors.Errorf("unsupported network version: %d", nwVer)
     }
 }
 
@@ -401,6 +401,6 @@ func PledgePenaltyForTermination(
         {{- end}}
     {{- end}}
     default:
-        return big.Zero(), xerrors.Errorf("unsupported network version: %d", v)
+        return big.Zero(), xerrors.Errorf("unsupported network version: %d", nwVer)
     }
 }
\ No newline at end of file
diff --git a/chain/actors/builtin/miner/miner.go b/chain/actors/builtin/miner/miner.go
index 1a9678175b8..7a9709ea0e6 100644
--- a/chain/actors/builtin/miner/miner.go
+++ b/chain/actors/builtin/miner/miner.go
@@ -457,7 +457,7 @@ func PledgePenaltyForContinuedFault(
 
 	switch v {
 	default:
-		return big.Zero(), xerrors.Errorf("unsupported network version: %d", v)
+		return big.Zero(), xerrors.Errorf("unsupported network version: %d", nwVer)
 	}
 }
 
@@ -476,6 +476,6 @@ func PledgePenaltyForTermination(
 	case actorstypes.Version16:
 		return minertypes16.PledgePenaltyForTermination(initialPledge, sectorAge, faultFee), nil
 	default:
-		return big.Zero(), xerrors.Errorf("unsupported network version: %d", v)
+		return big.Zero(), xerrors.Errorf("unsupported network version: %d", nwVer)
 	}
 }