diff --git a/trunk/Makefile b/trunk/Makefile
index df52725..083b648 100644
--- a/trunk/Makefile
+++ b/trunk/Makefile
@@ -14,7 +14,7 @@
 
 DEV_CYGWIN   = FALSE
 DEBUG_PRINT  = FALSE
-ECDSA_SHA256 = FALSE
+ECDSA_SHA256 = TRUE
 USE_HSM      = TRUE
 RESET_HSM    = TRUE