1 files changed, 1 insertions, 0 deletions
diff --git a/apps/ec.c b/apps/ec.c
index a763daa653..9ddaddfe5e 100644
--- a/apps/ec.c
+++ b/apps/ec.c
@@ -56,6 +56,7 @@
  *
  */
 
+#include <openssl/opensslconf.h>
 #ifndef OPENSSL_NO_EC
 #include <stdio.h>
 #include <stdlib.h>