diff --git a/components/libc/compilers/common/include/sys/signal.h b/components/libc/compilers/common/include/sys/signal.h
index 8e67ae9ae1..b6990e1b55 100644
--- a/components/libc/compilers/common/include/sys/signal.h
+++ b/components/libc/compilers/common/include/sys/signal.h
@@ -17,11 +17,11 @@ extern "C" {
 #endif /* __cplusplus */
 
 #ifdef RT_USING_MUSLLIBC
-/* this is require for musl <signal.h> */
+/* this is required for musl <signal.h> */
 #ifndef _POSIX_SOURCE
 #define _POSIX_SOURCE
 #include <signal.h>
-/* limit influenced of _POSIX_SOURCE */
+/* limiting influence of _POSIX_SOURCE */
 #undef _POSIX_SOURCE
 
 #else /* ndef _POSIX_SOURCE */
diff --git a/libcpu/aarch64/common/mmu.c b/libcpu/aarch64/common/mmu.c
index e13045c773..345396e8cf 100644
--- a/libcpu/aarch64/common/mmu.c
+++ b/libcpu/aarch64/common/mmu.c
@@ -207,6 +207,7 @@ void *rt_hw_mmu_map(rt_aspace_t aspace, void *v_addr, void *p_addr, size_t size,
                 MM_PGTBL_LOCK(aspace);
                 _kenrel_unmap_4K(aspace->page_table, (void *)unmap_va);
                 MM_PGTBL_UNLOCK(aspace);
+                unmap_va += ARCH_PAGE_SIZE;
             }
             break;
         }