diff --git a/tests/test_index.c b/tests/test_index.c
index 458386df..04e5c159 100644
--- a/tests/test_index.c
+++ b/tests/test_index.c
@@ -100,7 +100,7 @@ test_lzma_index_memused(void)
 static void
 test_lzma_index_append(void)
 {
-	// Basic input-ouput test done here.
+	// Basic input-output test done here.
 	// Less trivial tests for this function are done throughout
 	// other tests.
 
diff --git a/tests/test_lzip_decoder.c b/tests/test_lzip_decoder.c
index 3743d434..e115573b 100644
--- a/tests/test_lzip_decoder.c
+++ b/tests/test_lzip_decoder.c
@@ -233,7 +233,7 @@ test_v1_trailing(void)
 
 
 static void
-test_concatentated(void)
+test_concatenated(void)
 {
 	// First test a file with one v0 member and one v1 member
 	// The first member should contain "Hello\n" and
@@ -474,7 +474,7 @@ main(int argc, char **argv)
 	tuktest_run(test_v1_decode);
 	tuktest_run(test_v0_trailing);
 	tuktest_run(test_v1_trailing);
-	tuktest_run(test_concatentated);
+	tuktest_run(test_concatenated);
 	tuktest_run(test_crc);
 	tuktest_run(test_invalid_magic_bytes);
 	tuktest_run(test_invalid_version);