Update error codes.
diff --git a/fips/fips.h b/fips/fips.h
index a95f44e..06809c7 100644
--- a/fips/fips.h
+++ b/fips/fips.h
@@ -412,6 +412,7 @@
 #define FIPS_R_ALREADY_INSTANTIATED			 101
 #define FIPS_R_AUTHENTICATION_FAILURE			 151
 #define FIPS_R_CONTRADICTING_EVIDENCE			 102
+#define FIPS_R_DRBG_NOT_INITIALISED			 152
 #define FIPS_R_DRBG_STUCK				 103
 #define FIPS_R_ENTROPY_ERROR_UNDETECTED			 104
 #define FIPS_R_ENTROPY_NOT_REQUESTED_FOR_RESEED		 105