diff --git a/1.8/spec_helper.rb b/1.8/spec_helper.rb
index 94ecc85e3e..dfc5281072 100644
--- a/1.8/spec_helper.rb
+++ b/1.8/spec_helper.rb
@@ -40,8 +40,8 @@
 end
 
 v = MSpec::VERSION.split('.').collect { |d| "1%02d" % d.to_i }.join.to_i
-unless v >= 101105100
-  puts "Please install MSpec version >= 1.5.0 to run the specs"
+unless v >= 101105101
+  puts "Please install MSpec version >= 1.5.1 to run the specs"
   exit 1
 end