diff --git a/hcl2template/types.packer_config.go b/hcl2template/types.packer_config.go
index 84d1fe8de7d..0e70c29a3f5 100644
--- a/hcl2template/types.packer_config.go
+++ b/hcl2template/types.packer_config.go
@@ -123,7 +123,7 @@ func (cfg *PackerConfig) EvalContext(ctx BlockContext, variables map[string]cty.
 
 	iterID, ok := cfg.HCPVars["iterationID"]
 	if ok {
-		log.Printf("iterationID set: %q", iterID)
+		log.Printf("iterationID set: %q", iterID.AsString())
 
 		ectx.Variables[packerAccessor] = cty.ObjectVal(map[string]cty.Value{
 			"version":     cty.StringVal(cfg.CorePackerVersionString),