diff --git a/nx/include/switch/nca.h b/nx/include/switch/nca.h
new file mode 100644
index 00000000..e563f07a
--- /dev/null
+++ b/nx/include/switch/nca.h
@@ -0,0 +1,25 @@
+/**
+ * @file nca.h
+ * @brief NCA structure.
+ * @copyright libnx Authors
+ */
+
+#pragma once
+
+#define PFS0HEADER_MAGIC 0x30534650
+
+/// Offset 0x0 in the NSP file.
+typedef struct {
+    u32 magic;
+    u32 number_of_files;
+    u32 size_of_string_table;
+    u32 reserved;
+} Pfs0Header;
+
+/// These follow after the Pfs0Header, based on the number of files in the header.
+typedef struct {
+    u64 offset;
+    u64 size;
+    u32 name_offset;
+    u32 reserved;
+} Pfs0FileEntry;