diff --git a/Tests/base/NSData/additions.m b/Tests/base/NSData/additions.m
index f5de29051..38f77d245 100644
--- a/Tests/base/NSData/additions.m
+++ b/Tests/base/NSData/additions.m
@@ -15,6 +15,7 @@ int main()
   NSUInteger    length;
 
   ref = [NSData dataWithContentsOfFile: @"Lorum"];
+  PASS(ref != nil, "dataWithContentsOfFile: is not nil");
   PASS(NO == [ref isGzipped], "Reference data is not gzipped");
 
   data = [ref gzipped: 0];