diff --git a/include/arch/arm/aarch64/scripts/linker.ld b/include/arch/arm/aarch64/scripts/linker.ld
index ab4de8f6c84..9fb837867fc 100644
--- a/include/arch/arm/aarch64/scripts/linker.ld
+++ b/include/arch/arm/aarch64/scripts/linker.ld
@@ -297,7 +297,6 @@ SECTIONS
     _image_ram_end = .;
     _end = .; /* end of image */
     z_mapped_end = .;
-    z_mapped_size = z_mapped_end - z_mapped_start;
 
     __kernel_ram_end = RAM_ADDR + RAM_SIZE;
     __kernel_ram_size = __kernel_ram_end - __kernel_ram_start;
diff --git a/include/linker/linker-defs.h b/include/linker/linker-defs.h
index 383fef15e84..be75c318d28 100644
--- a/include/linker/linker-defs.h
+++ b/include/linker/linker-defs.h
@@ -186,7 +186,6 @@ extern char __data_ram_end[];
 /* Virtual addresses of page-aligned kernel image mapped into RAM at boot */
 extern char z_mapped_start[];
 extern char z_mapped_end[];
-extern char z_mapped_size[];
 #endif /* CONFIG_MMU */
 
 /* Includes text and rodata */
diff --git a/kernel/include/mmu.h b/kernel/include/mmu.h
index 50981e3ecf3..5b62b9f1efc 100644
--- a/kernel/include/mmu.h
+++ b/kernel/include/mmu.h
@@ -38,7 +38,7 @@
 /* Boot-time virtual location of the kernel image. */
 #define Z_KERNEL_VIRT_START	((uint8_t *)(&z_mapped_start))
 #define Z_KERNEL_VIRT_END	((uint8_t *)(&z_mapped_end))
-#define Z_KERNEL_VIRT_SIZE	((size_t)(&z_mapped_size))
+#define Z_KERNEL_VIRT_SIZE	(Z_KERNEL_VIRT_END - Z_KERNEL_VIRT_START)
 
 #define Z_VM_OFFSET	 ((CONFIG_KERNEL_VM_BASE + CONFIG_KERNEL_VM_OFFSET) - \
 			  CONFIG_SRAM_BASE_ADDRESS)