diff --git a/sortix/x64/boot.s b/sortix/x64/boot.s
index 7ebb80f9..636a4b83 100644
--- a/sortix/x64/boot.s
+++ b/sortix/x64/boot.s
@@ -31,7 +31,7 @@
 .code32
 start:
 _start:
-	jmp multiboot_entry
+	jmp prepare_kernel_execution
 
 	# Align 32 bits boundary.
 	.align 4
@@ -45,8 +45,7 @@ multiboot_header:
 	# Checksum.
 	.long -(0x1BADB002 + 0x00000003)
 
-multiboot_entry:
-
+prepare_kernel_execution:
 	# We got our multiboot information in various registers. But we are going
 	# to need these registers. But where can we store them then? Oh hey, let's
 	# store then in the code already run!
@@ -127,6 +126,22 @@ Realm64:
 	mov %ax, %fs
 	mov %ax, %gs
 
+	# Enable the floating point unit.
+	mov %cr0, %rax
+	and $0xFFFD, %ax
+	or $0x10, %ax
+	mov %rax, %cr0
+	fninit
+
+	# Enable Streaming SIMD Extensions.
+	mov %cr0, %rax
+	and $0xFFFB, %ax
+	or $0x2, %ax
+	mov %rax, %cr0
+	mov %cr4, %rax
+	or $0x600, %rax
+	mov %rax, %cr4
+
 	# Alright, that was the bootstrap code. Now begin preparing to run the
 	# actual 64-bit kernel.
 	jmp Main
diff --git a/sortix/x86/base.s b/sortix/x86/base.s
index c02c11b3..6c2a71ce 100644
--- a/sortix/x86/base.s
+++ b/sortix/x86/base.s
@@ -28,9 +28,8 @@
 .section .text
 
 .text  0x100000
-.type _beginkernel, @function
+.type beginkernel, @function
 beginkernel:
-_beginkernel:
 	# Initialize the stack pointer. The magic value is from kernel.cpp.
 	movl $stack, %esp
 	addl $65536, %esp # 64 KiB, see kernel.cpp
diff --git a/sortix/x86/boot.s b/sortix/x86/boot.s
index 07394c40..63a990ba 100644
--- a/sortix/x86/boot.s
+++ b/sortix/x86/boot.s
@@ -31,7 +31,7 @@
 .type _start, @function
 start:
 _start:
-	jmp beginkernel
+	jmp prepare_kernel_execution
 
 	# Align 32 bits boundary.
 	.align	4
@@ -45,3 +45,23 @@ multiboot_header:
 	# Checksum.
 	.long	-(0x1BADB002 + 0x00000003)
 
+prepare_kernel_execution:
+	# Enable the floating point unit.
+	mov %eax, 0x100000
+	mov %cr0, %eax
+	and $0xFFFD, %ax
+	or $0x10, %ax
+	mov %eax, %cr0
+	fninit
+
+	# Enable Streaming SIMD Extensions.
+	mov %cr0, %eax
+	and $0xFFFB, %ax
+	or $0x2, %ax
+	mov %eax, %cr0
+	mov %cr4, %eax
+	or $0x600, %eax
+	mov %eax, %cr4
+	mov 0x100000, %eax
+
+	jmp beginkernel