diff --git a/tests/der_tests.c b/tests/der_test.c
similarity index 99%
rename from tests/der_tests.c
rename to tests/der_test.c
index d165646..63b45a8 100644
--- a/tests/der_tests.c
+++ b/tests/der_test.c
@@ -5,7 +5,7 @@
 
 #ifndef LTC_DER
 
-int der_tests(void)
+int der_test(void)
 {
    return CRYPT_NOP;
 }
@@ -1086,7 +1086,7 @@ static int der_choice_test(void)
 }
 
 
-int der_tests(void)
+int der_test(void)
 {
    unsigned long x, y, z, zz, oid[2][32];
    unsigned char buf[3][2048];
diff --git a/tests/test.c b/tests/test.c
index 69d7c1a..7ed1e18 100644
--- a/tests/test.c
+++ b/tests/test.c
@@ -17,7 +17,7 @@ static const struct {
       LTC_TEST_FN(cipher_hash_test),
       LTC_TEST_FN(mac_test),
       LTC_TEST_FN(modes_test),
-      LTC_TEST_FN(der_tests),
+      LTC_TEST_FN(der_test),
       LTC_TEST_FN(pkcs_1_test),
       LTC_TEST_FN(pkcs_1_pss_test),
       LTC_TEST_FN(pkcs_1_oaep_test),
diff --git a/tests/tomcrypt_test.h b/tests/tomcrypt_test.h
index 63364e4..77f33b3 100644
--- a/tests/tomcrypt_test.h
+++ b/tests/tomcrypt_test.h
@@ -46,7 +46,7 @@ int dh_test(void);
 int katja_test(void);
 int ecc_tests(void);
 int dsa_test(void);
-int der_tests(void);
+int der_test(void);
 int misc_test(void);
 int base64_test(void);
 int file_test(void);