diff --git a/tests/integration_tests.c b/tests/integration_tests.c
index 1798ab9..5ae7b22 100644
--- a/tests/integration_tests.c
+++ b/tests/integration_tests.c
@@ -15,6 +15,7 @@ static void test_foo_or_bar_regex(void)
 	ASSERT_ACCEPTS(&dfa, "foo");
 	ASSERT_ACCEPTS(&dfa, "bar");
 	ASSERT_REJECTS(&dfa, "baz");
+	fsa_free(&dfa);
 }
 
 static void test_even_number_of_Is_regex(void)
@@ -30,6 +31,7 @@ static void test_even_number_of_Is_regex(void)
 	ASSERT_REJECTS(&dfa, "III");
 	ASSERT_REJECTS(&dfa, "IIIII");
 	ASSERT_REJECTS(&dfa, "IIIIIIIII");
+	fsa_free(&dfa);
 }
 
 static void test_arbitrary_regex_1(void)
@@ -42,6 +44,7 @@ static void test_arbitrary_regex_1(void)
 	ASSERT_ACCEPTS(&dfa, "dddddddd");
 	ASSERT_REJECTS(&dfa, "d");
 	ASSERT_REJECTS(&dfa, "abcd");
+	fsa_free(&dfa);
 }
 
 int main(void)