diff --git a/src/stk500v2.c b/src/stk500v2.c
index e9facb1c..3ced9970 100644
--- a/src/stk500v2.c
+++ b/src/stk500v2.c
@@ -5073,6 +5073,7 @@ void stk500v2_jtagmkII_initpgm(PROGRAMMER *pgm) {
   pgm->page_erase     = NULL;
   pgm->print_parms    = stk500v2_print_parms;
   pgm->set_sck_period = stk500v2_set_sck_period_mk2;
+  pgm->get_sck_period = stk500v2_get_sck_period;
   pgm->perform_osccal = stk500v2_perform_osccal;
   pgm->setup          = stk500v2_jtagmkII_setup;
   pgm->teardown       = stk500v2_jtagmkII_teardown;
@@ -5107,6 +5108,8 @@ void stk500v2_dragon_isp_initpgm(PROGRAMMER *pgm) {
   pgm->page_erase     = NULL;
   pgm->print_parms    = stk500v2_print_parms;
   pgm->set_sck_period = stk500v2_set_sck_period_mk2;
+  pgm->get_sck_period = stk500v2_get_sck_period;
+  pgm->perform_osccal = stk500v2_perform_osccal;
   pgm->setup          = stk500v2_jtagmkII_setup;
   pgm->teardown       = stk500v2_jtagmkII_teardown;
   pgm->page_size      = 256;
@@ -5138,6 +5141,7 @@ void stk500v2_dragon_pp_initpgm(PROGRAMMER *pgm) {
   pgm->paged_load     = stk500pp_paged_load;
   pgm->print_parms    = stk500v2_print_parms;
   pgm->set_sck_period = stk500v2_set_sck_period_mk2;
+  pgm->get_sck_period = stk500v2_get_sck_period;
   pgm->setup          = stk500v2_jtagmkII_setup;
   pgm->teardown       = stk500v2_jtagmkII_teardown;
   pgm->page_size      = 256;
@@ -5169,6 +5173,7 @@ void stk500v2_dragon_hvsp_initpgm(PROGRAMMER *pgm) {
   pgm->paged_load     = stk500hvsp_paged_load;
   pgm->print_parms    = stk500v2_print_parms;
   pgm->set_sck_period = stk500v2_set_sck_period_mk2;
+  pgm->get_sck_period = stk500v2_get_sck_period;
   pgm->setup          = stk500v2_jtagmkII_setup;
   pgm->teardown       = stk500v2_jtagmkII_teardown;
   pgm->page_size      = 256;