diff --git a/hcl2template/types.hcl_provisioner.go b/hcl2template/types.hcl_provisioner.go
index df962f3a0..132dd100e 100644
--- a/hcl2template/types.hcl_provisioner.go
+++ b/hcl2template/types.hcl_provisioner.go
@@ -40,6 +40,8 @@ func (p *HCL2Provisioner) HCL2Prepare(buildVars map[string]interface{}) error {
 			switch v := v.(type) {
 			case string:
 				buildValues[k] = cty.StringVal(v)
+			case uint8:
+				buildValues[k] = cty.NumberUIntVal(v)
 			case int64:
 				buildValues[k] = cty.NumberIntVal(v)
 			case uint64: