diff --git a/src/include/openssl/dsa.h b/src/include/openssl/dsa.h
index 8a182c2..2271915 100644
--- a/src/include/openssl/dsa.h
+++ b/src/include/openssl/dsa.h
@@ -64,6 +64,7 @@
 
 #include <openssl/engine.h>
 #include <openssl/ex_data.h>
+#include <openssl/thread.h>
 
 #if defined(__cplusplus)
 extern "C" {
@@ -301,7 +302,7 @@
 
 /* ex_data functions.
  *
- * These functions are wrappers. See |ex_data.h| for details. */
+ * See |ex_data.h| for details. */
 
 OPENSSL_EXPORT int DSA_get_ex_new_index(long argl, void *argp,
                                         CRYPTO_EX_new *new_func,
@@ -351,6 +352,7 @@
 
   int flags;
   /* Normally used to cache montgomery values */
+  CRYPTO_MUTEX method_mont_p_lock;
   BN_MONT_CTX *method_mont_p;
   int references;
   CRYPTO_EX_DATA ex_data;
@@ -364,14 +366,14 @@
 }  /* extern C */
 #endif
 
-#define DSA_F_sign 100
-#define DSA_F_verify 101
-#define DSA_F_dsa_sig_cb 102
-#define DSA_F_DSA_new_method 103
-#define DSA_F_sign_setup 104
-#define DSA_R_NEED_NEW_SETUP_VALUES 100
-#define DSA_R_BAD_Q_VALUE 101
+#define DSA_F_DSA_new_method 100
+#define DSA_F_dsa_sig_cb 101
+#define DSA_F_sign 102
+#define DSA_F_sign_setup 103
+#define DSA_F_verify 104
+#define DSA_R_BAD_Q_VALUE 100
+#define DSA_R_MISSING_PARAMETERS 101
 #define DSA_R_MODULUS_TOO_LARGE 102
-#define DSA_R_MISSING_PARAMETERS 103
+#define DSA_R_NEED_NEW_SETUP_VALUES 103
 
 #endif  /* OPENSSL_HEADER_DSA_H */