diff --git a/chroma/inc/kernel/system/descriptors.h b/chroma/inc/kernel/system/descriptors.h
index 0832045..1069795 100644
--- a/chroma/inc/kernel/system/descriptors.h
+++ b/chroma/inc/kernel/system/descriptors.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <stdint.h>
 #include <stddef.h>
 
diff --git a/chroma/inc/kernel/system/io.h b/chroma/inc/kernel/system/io.h
index fccd498..00eaf64 100644
--- a/chroma/inc/kernel/system/io.h
+++ b/chroma/inc/kernel/system/io.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <kernel/system/descriptors.h>
 
 /************************