diff --git a/crypto/err/err.c b/crypto/err/err.c
index f19d26bf..417d3227 100644
--- a/crypto/err/err.c
+++ b/crypto/err/err.c
@@ -512,8 +512,8 @@ static const char *const kLibraryNames[ERR_NUM_LIBS] = {
     "HMAC routines",                              /* ERR_LIB_HMAC */
     "Digest functions",                           /* ERR_LIB_DIGEST */
     "Cipher functions",                           /* ERR_LIB_CIPHER */
-    "User defined functions",                     /* ERR_LIB_USER */
     "HKDF functions",                             /* ERR_LIB_HKDF */
+    "User defined functions",                     /* ERR_LIB_USER */
 };
 
 const char *ERR_lib_error_string(uint32_t packed_error) {
diff --git a/crypto/err/err_data_generate.go b/crypto/err/err_data_generate.go
index 8b1c02d9..24e0d66f 100644
--- a/crypto/err/err_data_generate.go
+++ b/crypto/err/err_data_generate.go
@@ -59,8 +59,8 @@ var libraryNames = []string{
 	"HMAC",
 	"DIGEST",
 	"CIPHER",
-	"USER",
 	"HKDF",
+	"USER",
 }
 
 // stringList is a map from uint32 -> string which can output data for a sorted
diff --git a/include/openssl/err.h b/include/openssl/err.h
index bf1cf479..0a90b0e3 100644
--- a/include/openssl/err.h
+++ b/include/openssl/err.h
@@ -430,8 +430,8 @@ enum {
   ERR_LIB_HMAC,
   ERR_LIB_DIGEST,
   ERR_LIB_CIPHER,
-  ERR_LIB_USER,
   ERR_LIB_HKDF,
+  ERR_LIB_USER,
   ERR_NUM_LIBS
 };