diff --git a/library/stringio/shared/sysread.rb b/library/stringio/shared/sysread.rb
index 937bac705..3e23fbc23 100644
--- a/library/stringio/shared/sysread.rb
+++ b/library/stringio/shared/sysread.rb
@@ -10,6 +10,6 @@
 
   it "raises an EOFError when passed length > 0 and no data remains" do
     @io.read.should == "example"
-    -> { @io.sysread(1) }.should raise_error(EOFError)
+    -> { @io.send(@method, 1) }.should raise_error(EOFError)
   end
 end
diff --git a/library/stringio/sysread_spec.rb b/library/stringio/sysread_spec.rb
index 8f78073f4..fabb06dd9 100644
--- a/library/stringio/sysread_spec.rb
+++ b/library/stringio/sysread_spec.rb
@@ -1,6 +1,7 @@
 require_relative '../../spec_helper'
 require "stringio"
 require_relative 'shared/read'
+require_relative 'shared/sysread'
 
 describe "StringIO#sysread when passed length, buffer" do
   it_behaves_like :stringio_read, :sysread
@@ -32,6 +33,10 @@
   end
 end
 
+describe "StringIO#sysread when passed length" do
+  it_behaves_like :stringio_sysread_length, :sysread
+end
+
 describe "StringIO#sysread when passed [length]" do
   before :each do
     @io = StringIO.new("example")