diff --git a/tests/test_121/input/class_defs.tsv b/tests/test_121/input/class_defs.tsv
index ccfaeb1..e1e7752 100644
--- a/tests/test_121/input/class_defs.tsv
+++ b/tests/test_121/input/class_defs.tsv
@@ -1,5 +1,5 @@
 class	description
 >class	description
-Vehicle	A machine, with or wihtout its own power source, that eases the transportation of people, materials, etc.
-Airplane	"A vehicle which flies through the air, obtaining lif from air flowing acoss fixed wings"
-Boat	A vehicle which moves through water
\ No newline at end of file
+Vehicle	A machine, with or without its own power source, that eases the transportation of people, materials, etc.
+Airplane	"A vehicle which flies through the air, obtaining lift from air flowing across fixed wings"
+Boat	A vehicle which moves through water.