diff --git a/generator/vulkan/parse.zig b/generator/vulkan/parse.zig
index 3f06663..d95c65f 100644
--- a/generator/vulkan/parse.zig
+++ b/generator/vulkan/parse.zig
@@ -23,7 +23,7 @@ pub fn parseXml(backing_allocator: Allocator, root: *xml.Element, api: registry.
 
     const allocator = arena.allocator();
 
-    var reg = registry.Registry{
+    const reg = registry.Registry{
         .decls = try parseDeclarations(allocator, root, api),
         .api_constants = try parseApiConstants(allocator, root, api),
         .tags = try parseTags(allocator, root),
@@ -38,8 +38,8 @@ pub fn parseXml(backing_allocator: Allocator, root: *xml.Element, api: registry.
 }
 
 fn parseDeclarations(allocator: Allocator, root: *xml.Element, api: registry.Api) ![]registry.Declaration {
-    var types_elem = root.findChildByTag("types") orelse return error.InvalidRegistry;
-    var commands_elem = root.findChildByTag("commands") orelse return error.InvalidRegistry;
+    const types_elem = root.findChildByTag("types") orelse return error.InvalidRegistry;
+    const commands_elem = root.findChildByTag("commands") orelse return error.InvalidRegistry;
 
     const decl_upper_bound = types_elem.children.len + commands_elem.children.len;
     const decls = try allocator.alloc(registry.Declaration, decl_upper_bound);
diff --git a/generator/xml.zig b/generator/xml.zig
index 5badf8e..814663f 100644
--- a/generator/xml.zig
+++ b/generator/xml.zig
@@ -232,7 +232,7 @@ const Parser = struct {
             begin = prev_nl + 1;
         }
 
-        var end = mem.indexOfScalarPos(u8, self.source, self.offset, '\n') orelse self.source.len;
+        const end = mem.indexOfScalarPos(u8, self.source, self.offset, '\n') orelse self.source.len;
         return self.source[begin..end];
     }
 };