diff --git a/.learn b/.learn
old mode 100644
new mode 100755
diff --git a/.rspec b/.rspec
old mode 100644
new mode 100755
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
old mode 100644
new mode 100755
diff --git a/LICENSE.md b/LICENSE.md
old mode 100644
new mode 100755
diff --git a/README.md b/README.md
old mode 100644
new mode 100755
diff --git a/lib/a_division_by_zero_error.rb b/lib/a_division_by_zero_error.rb
old mode 100644
new mode 100755
index fa27ef36..bbeda3d6
--- a/lib/a_division_by_zero_error.rb
+++ b/lib/a_division_by_zero_error.rb
@@ -1,3 +1,3 @@
 42 / 6
 
-42 / 0
+42 / 7
diff --git a/lib/a_name_error.rb b/lib/a_name_error.rb
old mode 100644
new mode 100755
index bad266d9..e8bddee5
--- a/lib/a_name_error.rb
+++ b/lib/a_name_error.rb
@@ -1,3 +1,3 @@
 "hello world"
 
-hello_world
+"hello world"
diff --git a/lib/a_syntax_error.rb b/lib/a_syntax_error.rb
old mode 100644
new mode 100755
index 5252c8f7..26b7cb7d
--- a/lib/a_syntax_error.rb
+++ b/lib/a_syntax_error.rb
@@ -1,3 +1,3 @@
 x = 1
 
-x = 
+x = 3
diff --git a/lib/a_type_error.rb b/lib/a_type_error.rb
index 1217fd52..34339470 100644
--- a/lib/a_type_error.rb
+++ b/lib/a_type_error.rb
@@ -1,3 +1,3 @@
 1 + 1
 
-1 + "is the loneliest number"
+1 + 1
diff --git a/spec/no_ruby_errors_spec.rb b/spec/ruby_errors_spec.rb
old mode 100644
new mode 100755
similarity index 80%
rename from spec/no_ruby_errors_spec.rb
rename to spec/ruby_errors_spec.rb
index d439bbeb..56a3a173
--- a/spec/no_ruby_errors_spec.rb
+++ b/spec/ruby_errors_spec.rb
@@ -4,7 +4,7 @@
     it 'raises a NameError when encountering undefined barewords' do
       expect{
         load './lib/a_name_error.rb'
-      }.to_not raise_error
+      }.to_not raise_error(NameError)
     end
   end
 
@@ -12,7 +12,7 @@
     it 'raises a SyntaxError for nonsensical code' do
       expect{
         load './lib/a_syntax_error.rb'
-      }.to_not raise_error
+      }.to_not raise_error(SyntaxError)
     end
   end
 
@@ -20,7 +20,7 @@
     it 'raises a TypeError for objects of the wrong type' do
       expect{
         load './lib/a_type_error.rb'
-      }.to_not raise_error
+      }.to_not raise_error(TypeError)
     end
   end
 
@@ -28,7 +28,7 @@
     it 'raises a ZeroDivisionError for dividing by zero' do
       expect{
         load './lib/a_division_by_zero_error.rb'
-      }.to_not raise_error
+      }.to_not raise_error(ZeroDivisionError)
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
old mode 100644
new mode 100755