diff --git a/cpu/cc26xx-cc13xx/rf-core/ieee-mode.c b/cpu/cc26xx-cc13xx/rf-core/ieee-mode.c
index fc0ef7cbb..f26d57939 100644
--- a/cpu/cc26xx-cc13xx/rf-core/ieee-mode.c
+++ b/cpu/cc26xx-cc13xx/rf-core/ieee-mode.c
@@ -1048,12 +1048,6 @@ pending_packet(void)
 static int
 on(void)
 {
-  /*
-   * Request the HF XOSC as the source for the HF clock. Needed before we can
-   * use the FS. This will only request, it will _not_ perform the switch.
-   */
-  oscillators_request_hf_xosc();
-
   /*
    * If we are in the middle of a BLE operation, we got called by ContikiMAC
    * from within an interrupt context. Abort, but pretend everything is OK.
@@ -1063,6 +1057,12 @@ on(void)
     return RF_CORE_CMD_OK;
   }
 
+  /*
+   * Request the HF XOSC as the source for the HF clock. Needed before we can
+   * use the FS. This will only request, it will _not_ perform the switch.
+   */
+  oscillators_request_hf_xosc();
+
   if(rf_is_on()) {
     PRINTF("on: We were on. PD=%u, RX=0x%04x \n", rf_core_is_accessible(),
            RF_RADIO_OP_GET_STATUS(cmd_ieee_rx_buf));
diff --git a/cpu/cc26xx-cc13xx/rf-core/prop-mode.c b/cpu/cc26xx-cc13xx/rf-core/prop-mode.c
index 7515d79b4..419a7b9d2 100644
--- a/cpu/cc26xx-cc13xx/rf-core/prop-mode.c
+++ b/cpu/cc26xx-cc13xx/rf-core/prop-mode.c
@@ -893,12 +893,6 @@ pending_packet(void)
 static int
 on(void)
 {
-  /*
-   * Request the HF XOSC as the source for the HF clock. Needed before we can
-   * use the FS. This will only request, it will _not_ perform the switch.
-   */
-  oscillators_request_hf_xosc();
-
   /*
    * If we are in the middle of a BLE operation, we got called by ContikiMAC
    * from within an interrupt context. Abort, but pretend everything is OK.
@@ -907,6 +901,12 @@ on(void)
     return RF_CORE_CMD_OK;
   }
 
+  /*
+   * Request the HF XOSC as the source for the HF clock. Needed before we can
+   * use the FS. This will only request, it will _not_ perform the switch.
+   */
+  oscillators_request_hf_xosc();
+
   if(rf_is_on()) {
     PRINTF("on: We were on. PD=%u, RX=0x%04x \n", rf_core_is_accessible(),
            smartrf_settings_cmd_prop_rx_adv.status);