diff --git a/libs/bluetooth/jswrap_bluetooth.c b/libs/bluetooth/jswrap_bluetooth.c
index a955ceee5..93c30e138 100644
--- a/libs/bluetooth/jswrap_bluetooth.c
+++ b/libs/bluetooth/jswrap_bluetooth.c
@@ -61,7 +61,7 @@ of beta.  */
 #define DEVICE_NAME                     "Espruino "PC_BOARD_ID                      /**< Name of device. Will be included in the advertising data. */
 #define NUS_SERVICE_UUID_TYPE           BLE_UUID_TYPE_VENDOR_BEGIN                  /**< UUID type for the Nordic UART Service (vendor specific). */
 
-#define APP_ADV_INTERVAL                64                                        /**< The advertising interval (in units of 0.625 ms. This value corresponds to 750ms). */
+#define APP_ADV_INTERVAL                1200                                        /**< The advertising interval (in units of 0.625 ms. This value corresponds to 750ms). */
 #define APP_ADV_TIMEOUT_IN_SECONDS      180                                         /**< The advertising timeout (in units of seconds). */
 
 #define SCAN_INTERVAL                   0x00A0                                      /**< Scan interval in units of 0.625 millisecond. 100ms */
@@ -519,8 +519,8 @@ static void ble_stack_init(void)
     uint32_t err_code;
     
     // Initialize SoftDevice.
-    SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, NULL);
-    //SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_TEMP_8000MS_CALIBRATION, false);
+    // SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, NULL); // Maybe we should use this if external crystal available.
+    SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_TEMP_8000MS_CALIBRATION, false);
     
     ble_enable_params_t ble_enable_params;
     err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
diff --git a/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_16.ld b/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_16.ld
index 29d833b94..a969b86cf 100644
--- a/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_16.ld
+++ b/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_16.ld
@@ -6,7 +6,7 @@ GROUP(-lgcc -lc -lnosys)
 MEMORY
 {
   FLASH (rx) : ORIGIN = 0x1B000, LENGTH = 0x21000
-  RAM (rwx) :  ORIGIN = 0x20001F00, LENGTH = 0x2100 /* 16kB  */
+  RAM (rwx) :  ORIGIN = 0x20001E00, LENGTH = 0x2200 /* 16kB  */
 }
 
 SECTIONS
diff --git a/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_32.ld b/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_32.ld
index 9d97e97a0..251626386 100644
--- a/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_32.ld
+++ b/targetlibs/nrf5x/nrf5x_linkers/linker_nrf51_ble_espruino_32.ld
@@ -6,7 +6,7 @@ GROUP(-lgcc -lc -lnosys)
 MEMORY
 {
   FLASH (rx) : ORIGIN = 0x1B000, LENGTH = 0x21000
-  RAM (rwx) :  ORIGIN = 0x20001F00, LENGTH = 0x6100 /* 32kB  */
+  RAM (rwx) :  ORIGIN = 0x20001E00, LENGTH = 0x6200 /* 32kB  */
 }
 
 SECTIONS
diff --git a/targetlibs/nrf5x/nrf5x_linkers/linker_nrf52_ble_espruino.ld b/targetlibs/nrf5x/nrf5x_linkers/linker_nrf52_ble_espruino.ld
index ff35f8746..4633cd554 100644
--- a/targetlibs/nrf5x/nrf5x_linkers/linker_nrf52_ble_espruino.ld
+++ b/targetlibs/nrf5x/nrf5x_linkers/linker_nrf52_ble_espruino.ld
@@ -6,7 +6,7 @@ GROUP(-lgcc -lc -lnosys)
 MEMORY
 {
   FLASH (rx) : ORIGIN = 0x1B000, LENGTH = 0x5F000
-  RAM (rwx) :  ORIGIN = 0x20001F00, LENGTH = 0xE100 /* 64kB - This is PCA_10040 not the preview dev kit! */
+  RAM (rwx) :  ORIGIN = 0x20001E00, LENGTH = 0xE200 /* 64kB - This is PCA_10040 not the preview dev kit! */
 }
 
 SECTIONS