diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp
index 20d168056ca..386cb7154aa 100644
--- a/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -367,6 +367,7 @@ namespace {
         }
       }
       assert(Found && "Capturing call-site captured nothing?");
+      (void)Found;
       return false;
     }