diff --git a/src/compiler/compile/render_dom/Renderer.ts b/src/compiler/compile/render_dom/Renderer.ts
index 0b2dc6bfbc..046a90b684 100644
--- a/src/compiler/compile/render_dom/Renderer.ts
+++ b/src/compiler/compile/render_dom/Renderer.ts
@@ -86,8 +86,6 @@ export default class Renderer {
 			null
 		);
 
-		this.context_overflow = this.context.length > 31;
-
 		// TODO messy
 		this.blocks.forEach(block => {
 			if (block instanceof Block) {
@@ -99,6 +97,8 @@ export default class Renderer {
 
 		this.fragment.render(this.block, null, x`#nodes` as Identifier);
 
+		this.context_overflow = this.context.length > 31;
+
 		this.context.forEach(member => {
 			const { variable } = member;
 			if (variable) {
diff --git a/test/runtime/samples/bitmask-overflow-3/_config.js b/test/runtime/samples/bitmask-overflow-3/_config.js
new file mode 100644
index 0000000000..aee7d3237e
--- /dev/null
+++ b/test/runtime/samples/bitmask-overflow-3/_config.js
@@ -0,0 +1,3 @@
+export default {
+	error: `A is not defined`,
+};
\ No newline at end of file
diff --git a/test/runtime/samples/bitmask-overflow-3/main.svelte b/test/runtime/samples/bitmask-overflow-3/main.svelte
new file mode 100644
index 0000000000..aa2c56a147
--- /dev/null
+++ b/test/runtime/samples/bitmask-overflow-3/main.svelte
@@ -0,0 +1,4 @@
+<script>
+	let x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x21, x22, x23, x24, x25, x26, x27, x28, x29, x30, x31;
+</script>
+<A>foo</A>