diff --git a/lib/Transforms/IPO/Inliner.cpp b/lib/Transforms/IPO/Inliner.cpp
index ba0372b5b15..335baa1e9c1 100644
--- a/lib/Transforms/IPO/Inliner.cpp
+++ b/lib/Transforms/IPO/Inliner.cpp
@@ -33,7 +33,7 @@ STATISTIC(NumInlined, "Number of functions inlined");
 STATISTIC(NumDeleted, "Number of functions deleted because all callers found");
 
 static cl::opt<int>
-InlineLimit("inline-threshold", cl::Hidden, cl::init(200),
+InlineLimit("inline-threshold", cl::Hidden, cl::init(200), cl::ZeroOrMore,
         cl::desc("Control the amount of inlining to perform (default = 200)"));
 
 Inliner::Inliner(void *ID)