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
diff --git a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c
index ac1c24f..57fb9fa 100644
--- a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c
+++ b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mul2add.c
@@ -14,6 +14,7 @@
  * All curves taken from NIST recommendation paper of July 1999
  * Available at http://csrc.nist.gov/cryptval/dss.htm
  */
+#define LTC_SOURCE 1
 #include "tomcrypt.h"
 
 /**
diff --git a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c
index b94a50c..edf3052 100644
--- a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c
+++ b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_mulmod_timing.c
@@ -14,6 +14,7 @@
  * All curves taken from NIST recommendation paper of July 1999
  * Available at http://csrc.nist.gov/cryptval/dss.htm
  */
+#define LTC_SOURCE 1
 #include "tomcrypt.h"
 
 /**
diff --git a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c
index c8e359f..2add6ac 100644
--- a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c
+++ b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_add_point.c
@@ -14,6 +14,7 @@
  * All curves taken from NIST recommendation paper of July 1999
  * Available at http://csrc.nist.gov/cryptval/dss.htm
  */
+#define LTC_SOURCE 1
 #include "tomcrypt.h"
 
 /**
diff --git a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c
index f0b3e1d..fbf3f68 100644
--- a/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c
+++ b/dropbear/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c
@@ -14,6 +14,7 @@
  * All curves taken from NIST recommendation paper of July 1999
  * Available at http://csrc.nist.gov/cryptval/dss.htm
  */
+#define LTC_SOURCE 1
 #include "tomcrypt.h"
 
 /**