diff --git a/include/polarssl/rsa.h b/include/polarssl/rsa.h
index c272cc7..49a04b3 100644
--- a/include/polarssl/rsa.h
+++ b/include/polarssl/rsa.h
@@ -31,7 +31,7 @@
 #define POLARSSL_ERR_RSA_PUBLIC_FAILED                     0x0440
 #define POLARSSL_ERR_RSA_PRIVATE_FAILED                    0x0450
 #define POLARSSL_ERR_RSA_VERIFY_FAILED                     0x0460
-#define POLARSSL_ERR_RSA_OUTPUT_TO_LARGE                   0x0470
+#define POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE                  0x0470
 
 /*
  * PKCS#1 constants