diff --git a/decrepit/blowfish/blowfish.c b/decrepit/blowfish/blowfish.c
index 186f486..aa872bc 100644
--- a/decrepit/blowfish/blowfish.c
+++ b/decrepit/blowfish/blowfish.c
@@ -593,7 +593,7 @@
 }
 
 static const EVP_CIPHER bf_ecb = {
-    NID_undef,           BF_BLOCK /* block_size */,
+    NID_bf_ecb,          BF_BLOCK /* block_size */,
     16 /* key_size */,   BF_BLOCK /* iv_len */,
     sizeof(BF_KEY),      EVP_CIPH_ECB_MODE | EVP_CIPH_VARIABLE_LENGTH,
     NULL /* app_data */, bf_init_key,
@@ -602,7 +602,7 @@
 };
 
 static const EVP_CIPHER bf_cbc = {
-    NID_undef,           BF_BLOCK /* block_size */,
+    NID_bf_cbc,          BF_BLOCK /* block_size */,
     16 /* key_size */,   BF_BLOCK /* iv_len */,
     sizeof(BF_KEY),      EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH,
     NULL /* app_data */, bf_init_key,
@@ -611,7 +611,7 @@
 };
 
 static const EVP_CIPHER bf_cfb = {
-    NID_undef,           1 /* block_size */,
+    NID_bf_cfb64,        1 /* block_size */,
     16 /* key_size */,   BF_BLOCK /* iv_len */,
     sizeof(BF_KEY),      EVP_CIPH_CFB_MODE | EVP_CIPH_VARIABLE_LENGTH,
     NULL /* app_data */, bf_init_key,
diff --git a/decrepit/cast/cast.c b/decrepit/cast/cast.c
index bc37203..8fd4e3a 100644
--- a/decrepit/cast/cast.c
+++ b/decrepit/cast/cast.c
@@ -442,7 +442,7 @@
 }
 
 static const EVP_CIPHER cast5_ecb = {
-    NID_undef,           CAST_BLOCK,
+    NID_cast5_ecb,       CAST_BLOCK,
     CAST_KEY_LENGTH,     CAST_BLOCK /* iv_len */,
     sizeof(CAST_KEY),    EVP_CIPH_ECB_MODE | EVP_CIPH_VARIABLE_LENGTH,
     NULL /* app_data */, cast_init_key,
@@ -451,7 +451,7 @@
 };
 
 static const EVP_CIPHER cast5_cbc = {
-    NID_undef,           CAST_BLOCK,
+    NID_cast5_cbc,       CAST_BLOCK,
     CAST_KEY_LENGTH,     CAST_BLOCK /* iv_len */,
     sizeof(CAST_KEY),    EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH,
     NULL /* app_data */, cast_init_key,