diff --git a/rtos/TARGET_CORTEX/mbed_rtx_handlers.c b/rtos/TARGET_CORTEX/mbed_rtx_handlers.c
index 882d4636af..ebbd3979e3 100644
--- a/rtos/TARGET_CORTEX/mbed_rtx_handlers.c
+++ b/rtos/TARGET_CORTEX/mbed_rtx_handlers.c
@@ -45,7 +45,8 @@ __NO_RETURN uint32_t osRtxErrorNotify (uint32_t code, void *object_id)
     switch (code) {
       case osRtxErrorStackUnderflow:
         // Stack underflow detected for thread (thread_id=object_id)
-        error("CMSIS-RTOS error: Stack underflow (status: 0x%X, task ID: 0x%X, task name: %s)\n\r",
+        // Note: "overflow" is printed instead of "underflow" due to end user familiarity with overflow errors
+        error("CMSIS-RTOS error: Stack overflow (status: 0x%X, task ID: 0x%X, task name: %s)\n\r",
                 code, object_id, osThreadGetName(object_id));
         break;
       case osRtxErrorISRQueueOverflow: