Fix typos in macro names
diff --git a/include/polarssl/check_config.h b/include/polarssl/check_config.h
index a12c302..5369d88 100644
--- a/include/polarssl/check_config.h
+++ b/include/polarssl/check_config.h
@@ -103,7 +103,7 @@
#error "POLARSSL_HAVEGE_C defined, but not all prerequisites"
#endif
-#if defined(POLARSSL_HMAC_DRBG) && !defined(POLARSSL_MD_C)
+#if defined(POLARSSL_HMAC_DRBG_C) && !defined(POLARSSL_MD_C)
#error "POLARSSL_HMAC_DRBG_C defined, but not all prerequisites"
#endif
@@ -436,7 +436,7 @@
#if defined(POLARSSL_SSL_SESSION_TICKETS) && defined(POLARSSL_SSL_TLS_C) && \
( !defined(POLARSSL_AES_C) || !defined(POLARSSL_SHA256_C) || \
!defined(POLARSSL_CIPHER_MODE_CBC) )
-#error "POLARSSL_SSL_SESSION_TICKETS_C defined, but not all prerequisites"
+#error "POLARSSL_SSL_SESSION_TICKETS defined, but not all prerequisites"
#endif
#if defined(POLARSSL_SSL_CBC_RECORD_SPLITTING) && \