diff --git a/src/comp_ctx.zig b/src/comp_ctx.zig
index b22768c..d188645 100644
--- a/src/comp_ctx.zig
+++ b/src/comp_ctx.zig
@@ -1,5 +1,6 @@
 const std = @import("std");
 const ast = @import("ast.zig");
+const llvm = @import("llvm.zig");
 
 pub const CompilationError = error{
     TypeError,
@@ -79,6 +80,7 @@ pub const Scope = struct {
 pub const Parameter = struct {
     idx: usize,
     typ: SymbolUnderlyingType,
+    alloca: ?llvm.LLVMValueRef = null,
 };
 
 pub const ParameterMap = std.StringHashMap(Parameter);