diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_ARM/irq_cm0.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_ARM/irq_cm0.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_ARM/irq_cm0.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_ARM/irq_cm0.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_IAR/irq_cm0.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_IAR/irq_cm0.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_IAR/irq_cm0.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_M0/TOOLCHAIN_IAR/irq_cm0.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_ARM/irq_cm0.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_ARM/irq_cm0.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_ARM/irq_cm0.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_ARM/irq_cm0.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/irq_cm0.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/irq_cm0.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/irq_cm0.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/irq_cm0.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_ARM/irq_cm3.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_ARM/irq_cm3.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_ARM/irq_cm3.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_ARM/irq_cm3.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_IAR/irq_cm3.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_IAR/irq_cm3.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_IAR/irq_cm3.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_IAR/irq_cm3.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/irq_cm4f.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/irq_cm4f.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/irq_cm4f.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/irq_cm4f.S
diff --git a/rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_IAR/irq_cm4f.s b/rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_IAR/irq_cm4f.S
similarity index 100%
rename from rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_IAR/irq_cm4f.s
rename to rtos/rtx5/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_IAR/irq_cm4f.S