diff --git a/right/src/eeprom.c b/right/src/eeprom.c
index c51181e..3dfa761 100644
--- a/right/src/eeprom.c
+++ b/right/src/eeprom.c
@@ -6,7 +6,7 @@
 #include "config_parser/config_globals.h"
 #include "buffer.h"
 
-bool IsEepromBusy;
+volatile bool IsEepromBusy;
 static eeprom_operation_t CurrentEepromOperation;
 static config_buffer_id_t CurrentConfigBufferId;
 status_t LastEepromTransferStatus;
diff --git a/right/src/eeprom.h b/right/src/eeprom.h
index 7de803a..f0d6250 100644
--- a/right/src/eeprom.h
+++ b/right/src/eeprom.h
@@ -24,7 +24,7 @@
 
 // Variables:
 
-    extern bool IsEepromBusy;
+    extern volatile bool IsEepromBusy;
     extern status_t EepromTransferStatus;
 
 // Functions:
diff --git a/right/src/init_peripherals.c b/right/src/init_peripherals.c
index a7fdc5e..a887f39 100644
--- a/right/src/init_peripherals.c
+++ b/right/src/init_peripherals.c
@@ -18,8 +18,8 @@
 #include "bootloader/wormhole.h"
 
 bool IsBusPalOn;
-uint32_t I2cMainBusRequestedBaudRateBps = I2C_MAIN_BUS_NORMAL_BAUD_RATE;
-uint32_t I2cMainBusActualBaudRateBps;
+volatile uint32_t I2cMainBusRequestedBaudRateBps = I2C_MAIN_BUS_NORMAL_BAUD_RATE;
+volatile uint32_t I2cMainBusActualBaudRateBps;
 
 void initBusPalState(void) {
     IsBusPalOn = Wormhole.magicNumber == WORMHOLE_MAGIC_NUMBER && Wormhole.enumerationMode == EnumerationMode_BusPal;
diff --git a/right/src/init_peripherals.h b/right/src/init_peripherals.h
index 0b0ad61..0d66399 100644
--- a/right/src/init_peripherals.h
+++ b/right/src/init_peripherals.h
@@ -8,8 +8,8 @@
 // Variables:
 
     extern bool IsBusPalOn;
-    extern uint32_t I2cMainBusRequestedBaudRateBps;
-    extern uint32_t I2cMainBusActualBaudRateBps;
+    extern volatile uint32_t I2cMainBusRequestedBaudRateBps;
+    extern volatile uint32_t I2cMainBusActualBaudRateBps;
 
 // Functions:
 
diff --git a/right/src/timer.c b/right/src/timer.c
index c997310..ac96d4c 100644
--- a/right/src/timer.c
+++ b/right/src/timer.c
@@ -1,7 +1,7 @@
 #include "fsl_pit.h"
 #include "timer.h"
 
-uint32_t CurrentTime;
+volatile uint32_t CurrentTime;
 
 void PIT_TIMER_HANDLER(void)
 {
diff --git a/right/src/timer.h b/right/src/timer.h
index 012bb49..69b54bc 100644
--- a/right/src/timer.h
+++ b/right/src/timer.h
@@ -11,7 +11,7 @@
 
 // Variables:
 
-    extern uint32_t CurrentTime;
+    extern volatile uint32_t CurrentTime;
 
 // Functions:
 
diff --git a/right/src/usb_interfaces/usb_interface_basic_keyboard.c b/right/src/usb_interfaces/usb_interface_basic_keyboard.c
index 3062b28..6d4b4b4 100644
--- a/right/src/usb_interfaces/usb_interface_basic_keyboard.c
+++ b/right/src/usb_interfaces/usb_interface_basic_keyboard.c
@@ -4,7 +4,7 @@
 static usb_basic_keyboard_report_t usbBasicKeyboardReports[2];
 uint32_t UsbBasicKeyboardActionCounter;
 usb_basic_keyboard_report_t* ActiveUsbBasicKeyboardReport = usbBasicKeyboardReports;
-bool IsUsbBasicKeyboardReportSent = false;
+volatile bool IsUsbBasicKeyboardReportSent = false;
 static uint8_t usbBasicKeyboardInBuffer[USB_BASIC_KEYBOARD_REPORT_LENGTH];
 
 usb_basic_keyboard_report_t* getInactiveUsbBasicKeyboardReport(void)
diff --git a/right/src/usb_interfaces/usb_interface_basic_keyboard.h b/right/src/usb_interfaces/usb_interface_basic_keyboard.h
index f3b1c02..2a7fea0 100644
--- a/right/src/usb_interfaces/usb_interface_basic_keyboard.h
+++ b/right/src/usb_interfaces/usb_interface_basic_keyboard.h
@@ -31,7 +31,7 @@
 
 // Variables:
 
-    extern bool IsUsbBasicKeyboardReportSent;
+    extern volatile bool IsUsbBasicKeyboardReportSent;
     extern uint32_t UsbBasicKeyboardActionCounter;
     extern usb_basic_keyboard_report_t* ActiveUsbBasicKeyboardReport;
 
diff --git a/right/src/usb_interfaces/usb_interface_media_keyboard.c b/right/src/usb_interfaces/usb_interface_media_keyboard.c
index 4693dcc..d818ddf 100644
--- a/right/src/usb_interfaces/usb_interface_media_keyboard.c
+++ b/right/src/usb_interfaces/usb_interface_media_keyboard.c
@@ -3,7 +3,7 @@
 uint32_t UsbMediaKeyboardActionCounter;
 static usb_media_keyboard_report_t usbMediaKeyboardReports[2];
 usb_media_keyboard_report_t* ActiveUsbMediaKeyboardReport = usbMediaKeyboardReports;
-bool IsUsbMediaKeyboardReportSent = false;
+volatile bool IsUsbMediaKeyboardReportSent = false;
 
 usb_media_keyboard_report_t* getInactiveUsbMediaKeyboardReport(void)
 {
diff --git a/right/src/usb_interfaces/usb_interface_media_keyboard.h b/right/src/usb_interfaces/usb_interface_media_keyboard.h
index 62859d6..8b39fb2 100644
--- a/right/src/usb_interfaces/usb_interface_media_keyboard.h
+++ b/right/src/usb_interfaces/usb_interface_media_keyboard.h
@@ -28,7 +28,7 @@
 
 // Variables:
 
-    extern bool IsUsbMediaKeyboardReportSent;
+    extern volatile bool IsUsbMediaKeyboardReportSent;
     extern uint32_t UsbMediaKeyboardActionCounter;
     extern usb_media_keyboard_report_t* ActiveUsbMediaKeyboardReport;
 
diff --git a/right/src/usb_interfaces/usb_interface_mouse.c b/right/src/usb_interfaces/usb_interface_mouse.c
index 27acb64..94a6cad 100644
--- a/right/src/usb_interfaces/usb_interface_mouse.c
+++ b/right/src/usb_interfaces/usb_interface_mouse.c
@@ -3,7 +3,7 @@
 uint32_t UsbMouseActionCounter;
 static usb_mouse_report_t usbMouseReports[2];
 usb_mouse_report_t* ActiveUsbMouseReport = usbMouseReports;
-bool IsUsbMouseReportSent = false;
+volatile bool IsUsbMouseReportSent = false;
 
 usb_mouse_report_t* getInactiveUsbMouseReport(void)
 {
diff --git a/right/src/usb_interfaces/usb_interface_mouse.h b/right/src/usb_interfaces/usb_interface_mouse.h
index e0e1e67..e1a2cc7 100644
--- a/right/src/usb_interfaces/usb_interface_mouse.h
+++ b/right/src/usb_interfaces/usb_interface_mouse.h
@@ -31,7 +31,7 @@
 
 // Variables:
 
-    extern bool IsUsbMouseReportSent;
+    extern volatile bool IsUsbMouseReportSent;
     extern uint32_t UsbMouseActionCounter;
     extern usb_mouse_report_t* ActiveUsbMouseReport;
 
diff --git a/right/src/usb_interfaces/usb_interface_system_keyboard.c b/right/src/usb_interfaces/usb_interface_system_keyboard.c
index 7e6e61a..34a47a0 100644
--- a/right/src/usb_interfaces/usb_interface_system_keyboard.c
+++ b/right/src/usb_interfaces/usb_interface_system_keyboard.c
@@ -3,7 +3,7 @@
 uint32_t UsbSystemKeyboardActionCounter;
 static usb_system_keyboard_report_t usbSystemKeyboardReports[2];
 usb_system_keyboard_report_t* ActiveUsbSystemKeyboardReport = usbSystemKeyboardReports;
-bool IsUsbSystemKeyboardReportSent = false;
+volatile bool IsUsbSystemKeyboardReportSent = false;
 
 usb_system_keyboard_report_t* getInactiveUsbSystemKeyboardReport()
 {
diff --git a/right/src/usb_interfaces/usb_interface_system_keyboard.h b/right/src/usb_interfaces/usb_interface_system_keyboard.h
index d19d362..0a84353 100644
--- a/right/src/usb_interfaces/usb_interface_system_keyboard.h
+++ b/right/src/usb_interfaces/usb_interface_system_keyboard.h
@@ -29,7 +29,7 @@
 
 // Variables:
 
-    extern bool IsUsbSystemKeyboardReportSent;
+    extern volatile bool IsUsbSystemKeyboardReportSent;
     extern uint32_t UsbSystemKeyboardActionCounter;
     extern usb_system_keyboard_report_t* ActiveUsbSystemKeyboardReport;