diff --git a/spec/part1_spec.rb b/spec/part1_spec.rb
index f6612f95..3d2ab05a 100644
--- a/spec/part1_spec.rb
+++ b/spec/part1_spec.rb
@@ -1,3 +1,5 @@
+require 'ruby_intro.rb'
+
 describe 'Ruby intro part 1' do
   describe "#sum" do
     it "should be defined" do
diff --git a/spec/part2_spec.rb b/spec/part2_spec.rb
index c6a8bc2b..7219b453 100644
--- a/spec/part2_spec.rb
+++ b/spec/part2_spec.rb
@@ -1,3 +1,5 @@
+require 'ruby_intro.rb'
+
 describe "#hello" do
   it "should be defined" do
     expect { hello("Testing") }.not_to raise_error()#::NoMethodError)
diff --git a/spec/part3_spec.rb b/spec/part3_spec.rb
index aa58a76f..39824e67 100644
--- a/spec/part3_spec.rb
+++ b/spec/part3_spec.rb
@@ -1,3 +1,5 @@
+require 'ruby_intro.rb'
+
 describe "BookInStock" do
   it "should be defined" do
     expect { BookInStock }.not_to raise_error