diff --git a/lib/a_division_by_zero_error.rb b/lib/a_division_by_zero_error.rb
index fa27ef36..e6e2adaf 100644
--- 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 / 0
diff --git a/lib/a_name_error.rb b/lib/a_name_error.rb
index bad266d9..c4ebfad3 100644
--- a/lib/a_name_error.rb
+++ b/lib/a_name_error.rb
@@ -1,3 +1,3 @@
-"hello world"
+puts "hello world"
 
-hello_world
+'hello_world'
diff --git a/lib/a_syntax_error.rb b/lib/a_syntax_error.rb
index 5252c8f7..35ba1bc8 100644
--- a/lib/a_syntax_error.rb
+++ b/lib/a_syntax_error.rb
@@ -1,3 +1,3 @@
-x = 1
+"x = 1
 
-x = 
+x = 1"
diff --git a/lib/a_type_error.rb b/lib/a_type_error.rb
index 1217fd52..a0b2d005 100644
--- a/lib/a_type_error.rb
+++ b/lib/a_type_error.rb
@@ -1,3 +1,3 @@
-1 + 1
+'1 + 1
 
-1 + "is the loneliest number"
+1 + 1"