diff --git a/src/arch/x86_64/include/arch/hpet.h b/src/arch/x86_64/include/arch/hpet.h
index 93cb1388..3d116a7d 100644
--- a/src/arch/x86_64/include/arch/hpet.h
+++ b/src/arch/x86_64/include/arch/hpet.h
@@ -1,6 +1,8 @@
 #ifndef _HPET_H_INCLUDE
 #define _HPET_H_INCLUDE
 
+#include <stddef.h>
+
 void hpet_init();
 
 void hpet_wait_us(size_t us);
diff --git a/src/sys/mm/pmm.c b/src/sys/mm/pmm.c
index d2265dd6..8f56a96d 100644
--- a/src/sys/mm/pmm.c
+++ b/src/sys/mm/pmm.c
@@ -238,7 +238,7 @@ void pmm_init(){
 
 		if(!current->type == LIMINE_MEMMAP_USABLE) continue;
 		
-		pmm_free((void*)current->base, current->length / PAGE_SIZE + 1);
+		pmm_free((void*)current->base, current->length / PAGE_SIZE);
 
 	}