diff --git a/library/rsa.c b/library/rsa.c
index ad1ef6d..7e921fd 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -104,7 +104,7 @@
                             unsigned char const *D, size_t D_len,
                             unsigned char const *E, size_t E_len )
 {
-    int ret;
+    int ret = 0;
 
     if( N != NULL )
     {