1 files changed, 2 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/terraform/resource_address.go b/vendor/github.com/hashicorp/terraform/terraform/resource_address.go
index 156ecf5..5d8261a 100644
--- a/vendor/github.com/hashicorp/terraform/terraform/resource_address.go
+++ b/vendor/github.com/hashicorp/terraform/terraform/resource_address.go
@@ -365,6 +365,8 @@ func NewLegacyResourceInstanceAddress(addr addrs.AbsResourceInstance) *ResourceA
                 ret.Index = -1
         } else if ik, ok := addr.Resource.Key.(addrs.IntKey); ok {
                 ret.Index = int(ik)
+        } else if _, ok := addr.Resource.Key.(addrs.StringKey); ok {
+                ret.Index = -1
         } else {
                 panic(fmt.Errorf("cannot shim resource instance with key %#v to legacy ResourceAddress.Index", addr.Resource.Key))
         }