diff --git a/arch/x86/core/strtask.c b/arch/x86/core/strtask.c
index cb9be5096ad..68df9d9c609 100644
--- a/arch/x86/core/strtask.c
+++ b/arch/x86/core/strtask.c
@@ -89,8 +89,8 @@ void _StartTaskArch(
 	 * then the task only needs to be placed in the SSE_GROUP group.
 	 */
 
-	*pOpt |= (X->Group & SSE_GROUP) ? USE_SSE
-					: (X->Group & FPU_GROUP) ? USE_FP : 0;
+	*pOpt |= (X->group & SSE_GROUP) ? USE_SSE
+					: (X->group & FPU_GROUP) ? USE_FP : 0;
 }
 
 #endif /* CONFIG_MICROKERNEL */
diff --git a/include/microkernel/base_api.h b/include/microkernel/base_api.h
index dc87f50b7b8..7ec8f7a1c23 100644
--- a/include/microkernel/base_api.h
+++ b/include/microkernel/base_api.h
@@ -111,7 +111,7 @@ struct k_task {
 	kpriority_t priority;
 	ktask_t id;
 	uint32_t state;
-	uint32_t Group;
+	uint32_t group;
 	void (*fstart)(void);
 	char *workspace;
 	int worksize;
diff --git a/kernel/microkernel/k_task.c b/kernel/microkernel/k_task.c
index 7c2d8ad7c41..8df707eb095 100644
--- a/kernel/microkernel/k_task.c
+++ b/kernel/microkernel/k_task.c
@@ -397,7 +397,7 @@ void _k_task_group_op(struct k_args *A)
 #endif
 
 	for (X = _k_task_list_start; X < _k_task_list_end; X++) {
-		if (X->Group & grp) {
+		if (X->group & grp) {
 			switch (opt) {
 			case TASK_GROUP_START:
 				start_task(X, X->fstart);
@@ -451,7 +451,7 @@ void _task_group_ioctl(ktask_group_t group, /* task group */
 
 kpriority_t task_group_mask_get(void)
 {
-	return _k_current_task->Group;
+	return _k_current_task->group;
 }
 
 /**
@@ -463,7 +463,7 @@ kpriority_t task_group_mask_get(void)
 
 void task_group_join(uint32_t groups)
 {
-	_k_current_task->Group |= groups;
+	_k_current_task->group |= groups;
 }
 
 /**
@@ -475,7 +475,7 @@ void task_group_join(uint32_t groups)
 
 void task_group_leave(uint32_t groups)
 {
-	_k_current_task->Group &= ~groups;
+	_k_current_task->group &= ~groups;
 }
 
 /**