diff --git a/src/proof/prover.ts b/src/proof/prover.ts
index 88702ca8..90e4181c 100644
--- a/src/proof/prover.ts
+++ b/src/proof/prover.ts
@@ -59,6 +59,6 @@ export class NativeProver {
 
   private async terminateCurve(): Promise<void> {
     const curve = await getCurveFromName(NativeProver.curveName);
-    await curve.terminate();
+    curve.terminate();
   }
 }
diff --git a/types/ffjavascript.d.ts b/types/ffjavascript.d.ts
index 4aa496d1..578e45ec 100644
--- a/types/ffjavascript.d.ts
+++ b/types/ffjavascript.d.ts
@@ -1,3 +1,3 @@
 declare module 'ffjavascript' {
-  export function getCurveFromName(name: string): Promise<{ terminate: () => Promise<void> }>;
+  export function getCurveFromName(name: string): Promise<{ terminate: () => void }>;
 }