diff --git a/tags/variables.tf b/tags/variables.tf
index a67be4a..29b2205 100644
--- a/tags/variables.tf
+++ b/tags/variables.tf
@@ -26,7 +26,7 @@ variable "finops" {
   }
 
   validation {
-    condition     = length(var.finops)>0 && var.finops.number > 0 && var.finops.number < 10000000000
+    condition     = length(var.finops)>0 && var.finops.number==null || (var.finops.number > 0 && var.finops.number < 10000000000)
     error_message = "Invalid finops.number, must be between 0 and 10,000,000,000."
   }
 }