diff --git a/src/arch/wasm/CodeGen.zig b/src/arch/wasm/CodeGen.zig
index b9637bf8e31af9bcc9497777cae22958292db036..a72ae6a423926b34fc35a4178edb96c03be37a5e 100644
--- a/src/arch/wasm/CodeGen.zig
+++ b/src/arch/wasm/CodeGen.zig
@@ -666,6 +666,10 @@ pub fn deinit(self: *Self) void {
     self.locals.deinit(self.gpa);
     self.mir_instructions.deinit(self.gpa);
     self.mir_extra.deinit(self.gpa);
+    self.free_locals_i32.deinit(self.gpa);
+    self.free_locals_i64.deinit(self.gpa);
+    self.free_locals_f32.deinit(self.gpa);
+    self.free_locals_f64.deinit(self.gpa);
     self.* = undefined;
 }