diff --git a/c_src/onion_nif_rsa.c b/c_src/onion_nif_rsa.c
index 9ac87640cec57b23b66fa77d75874cef2a52c24a..8ad196768690705c065fdb69a8149cdec49d7fef 100644
--- a/c_src/onion_nif_rsa.c
+++ b/c_src/onion_nif_rsa.c
@@ -4,7 +4,6 @@
 
 #include <openssl/bn.h>
 #include <openssl/rsa.h>
-#include <openssl/pem.h>
 
 #include "onion_nif_rsa.h"