diff --git a/dropbear/libtomcrypt/src/headers/tomcrypt_custom.h b/dropbear/libtomcrypt/src/headers/tomcrypt_custom.h
index fafde84..cbfaeb3 100644
--- a/dropbear/libtomcrypt/src/headers/tomcrypt_custom.h
+++ b/dropbear/libtomcrypt/src/headers/tomcrypt_custom.h
@@ -139,7 +139,7 @@
 #ifdef DROPBEAR_ECC
 #define MECC
 #define LTC_ECC_SHAMIR
-// #define LTC_ECC_TIMING_RESISTANT
+#define LTC_ECC_TIMING_RESISTANT
 #define MPI
 #define LTM_DESC
 #ifdef DROPBEAR_ECC_256