1 files changed, 1 insertions, 0 deletions
diff --git a/apps/ts.c b/apps/ts.c
index f0923360a7..edeab82318 100644
--- a/apps/ts.c
+++ b/apps/ts.c
@@ -65,6 +65,7 @@
 #include <openssl/pem.h>
 #include <openssl/rand.h>
 #include <openssl/ts.h>
+#include <openssl/bn.h>
 
 #undef PROG
 #define PROG	ts_main