diff --git a/azurerm/utils/common_marshal.go b/azurerm/utils/common_marshal.go
index d03aef7f1033d..5ec26337e1cdb 100644
--- a/azurerm/utils/common_marshal.go
+++ b/azurerm/utils/common_marshal.go
@@ -40,6 +40,16 @@ func FlattenStringSlice(input *[]string) []interface{} {
 	return result
 }
 
+func FlattenFloatSlice(input *[]float64) []interface{} {
+	result := make([]interface{}, 0)
+	if input != nil {
+		for _, item := range *input {
+			result = append(result, item)
+		}
+	}
+	return result
+}
+
 func FlattenMapStringPtrString(input map[string]*string) map[string]interface{} {
 	result := make(map[string]interface{})
 	for k, v := range input {