diff --git a/chain/actors/policy/policy.go b/chain/actors/policy/policy.go
index 426ea9300..c06c85d38 100644
--- a/chain/actors/policy/policy.go
+++ b/chain/actors/policy/policy.go
@@ -196,6 +196,9 @@ func GetMaxProveCommitDuration(ver actors.Version, t abi.RegisteredSealProof) ab
 	}
 }
 
+// SetProviderCollateralSupplyTarget sets the percentage of normalized circulating
+// supply that must be covered by provider collateral in a deal. This should
+// only be used for testing.
 func SetProviderCollateralSupplyTarget(num, denom big.Int) {
 
 	market2.ProviderCollateralSupplyTarget = builtin2.BigFrac{
diff --git a/chain/actors/policy/policy.go.template b/chain/actors/policy/policy.go.template
index 84ba4b914..3257feffd 100644
--- a/chain/actors/policy/policy.go.template
+++ b/chain/actors/policy/policy.go.template
@@ -132,6 +132,9 @@ func GetMaxProveCommitDuration(ver actors.Version, t abi.RegisteredSealProof) ab
 	}
 }
 
+// SetProviderCollateralSupplyTarget sets the percentage of normalized circulating
+// supply that must be covered by provider collateral in a deal. This should
+// only be used for testing.
 func SetProviderCollateralSupplyTarget(num, denom big.Int) {
 {{range .versions}}
 	{{if (ge . 2)}}