diff --git a/assets/ts/state.ts b/assets/ts/state.ts
index 482f215..e68e9a8 100644
--- a/assets/ts/state.ts
+++ b/assets/ts/state.ts
@@ -56,7 +56,7 @@ export function incThreshold(): void {
 
 export function decThreshold(): void {
   let s = state.get()
-  s = updateThreshold(s, 1)
+  s = updateThreshold(s, -1)
   state.set(s)
 }