diff --git a/jtag/src/tap/cable/usbblaster.c b/jtag/src/tap/cable/usbblaster.c
index dfa9ffec..dd820317 100644
--- a/jtag/src/tap/cable/usbblaster.c
+++ b/jtag/src/tap/cable/usbblaster.c
@@ -303,6 +303,7 @@ usbblaster_flush( cable_t *cable, cable_flush_amount_t how_much )
 void
 usbblaster_set_frequency( cable_t *cable, uint32_t new_frequency )
 {
+	cable->frequency = new_frequency;
 }
 
 void
diff --git a/jtag/src/tap/cable/xpc.c b/jtag/src/tap/cable/xpc.c
index 24dacb82..f173d06c 100644
--- a/jtag/src/tap/cable/xpc.c
+++ b/jtag/src/tap/cable/xpc.c
@@ -94,6 +94,7 @@ xpc_set_trst( cable_t *cable, int trst )
 void
 xpc_set_frequency( cable_t *cable, uint32_t new_frequency )
 {
+	cable->frequency = new_frequency;
 }