diff --git a/library/ctr_drbg.c b/library/ctr_drbg.c
index d7a9484..726e58a 100644
--- a/library/ctr_drbg.c
+++ b/library/ctr_drbg.c
@@ -457,7 +457,7 @@
 exit:
     mbedtls_zeroize( add_input, sizeof( add_input ) );
     mbedtls_zeroize( tmp, sizeof( tmp ) );
-    return( 0 );
+    return( ret );
 }
 
 int mbedtls_ctr_drbg_random( void *p_rng, unsigned char *output, size_t output_len )