diff --git a/kernel/paging.c b/kernel/paging.c
index 6cbadab..3c4c0f4 100644
--- a/kernel/paging.c
+++ b/kernel/paging.c
@@ -10,8 +10,8 @@ static PageDir page_dir;
 
 void paging_enable()
 {
-    unsigned long cr0 = kernaux_arch_i386_read_cr0();
-    unsigned long cr4 = kernaux_arch_i386_read_cr4();
+    uint32_t cr0 = kernaux_arch_i386_read_cr0();
+    uint32_t cr4 = kernaux_arch_i386_read_cr4();
 
     assert(cr0 & KERNAUX_ARCH_I386_CR0_PE, "The boot loader should have put us in protected mode.");
 
@@ -45,7 +45,7 @@ void paging_clear()
 
 void paging_identity()
 {
-    for (int i = 0; i < PAGE_DIR_LENGTH; ++i) {
+    for (size_t i = 0; i < PAGE_DIR_LENGTH; ++i) {
         page_dir[i].addr = PAGE_DIR_ADDR(i * PAGE_BIG_SIZE);
 
         page_dir[i].unused         = 0;
@@ -61,15 +61,15 @@ void paging_identity()
     }
 }
 
-int paging_mapkernel(const struct Kernel_Info *const kinfo)
+void paging_mapkernel(const struct Kernel_Info *const kinfo)
 {
     assert(!(kinfo->kernel_phys_base % PAGE_BIG_SIZE), "Kernel physical address is not aligned.");
     assert(!(kinfo->kernel_virt_base % PAGE_BIG_SIZE), "Kernel virtual address is not aligned.");
 
-    int pde = kinfo->kernel_virt_base / PAGE_BIG_SIZE;
+    size_t pde = kinfo->kernel_virt_base / PAGE_BIG_SIZE;
 
-    unsigned long mapped = 0;
-    unsigned long kern_phys = kinfo->kernel_phys_base;
+    size_t mapped = 0;
+    size_t kern_phys = kinfo->kernel_phys_base;
 
     while (mapped < kinfo->kernel_size) {
         page_dir[pde].addr = PAGE_DIR_ADDR(kern_phys);
@@ -90,13 +90,10 @@ int paging_mapkernel(const struct Kernel_Info *const kinfo)
 
         ++pde;
     }
-
-    return pde;
 }
 
-unsigned long paging_load()
+void paging_load()
 {
-    unsigned long page_dir_phys = (unsigned long)page_dir;
+    size_t page_dir_phys = (size_t)page_dir;
     kernaux_arch_i386_write_cr3(page_dir_phys);
-    return page_dir_phys;
 }
diff --git a/kernel/paging.h b/kernel/paging.h
index aa0e235..8db2132 100644
--- a/kernel/paging.h
+++ b/kernel/paging.h
@@ -9,17 +9,17 @@
 #define PAGE_DIR_ADDR(base) ((base) >> 12)
 
 struct PageDir_Entry {
-    unsigned int present        : 1;
-    unsigned int writable       : 1;
-    unsigned int user           : 1;
-    unsigned int write_through  : 1;
-    unsigned int cache_disabled : 1;
-    unsigned int accessed       : 1;
-    unsigned int always_0       : 1;
-    unsigned int page_size      : 1;
-    unsigned int ignored        : 1;
-    unsigned int unused         : 3;
-    unsigned int addr           : 20;
+    unsigned present        : 1;
+    unsigned writable       : 1;
+    unsigned user           : 1;
+    unsigned write_through  : 1;
+    unsigned cache_disabled : 1;
+    unsigned accessed       : 1;
+    unsigned always_0       : 1;
+    unsigned page_size      : 1;
+    unsigned ignored        : 1;
+    unsigned unused         : 3;
+    unsigned addr           : 20;
 }
 __attribute__((packed));
 
@@ -29,7 +29,7 @@ void paging_enable();
 
 void paging_clear();
 void paging_identity();
-int paging_mapkernel(const struct Kernel_Info *kinfo);
-unsigned long paging_load();
+void paging_mapkernel(const struct Kernel_Info *kinfo);
+void paging_load();
 
 #endif