diff --git a/jni/c/headers/java/fr_acinq_secp256k1_Secp256k1CFunctions.h b/jni/c/headers/java/fr_acinq_secp256k1_Secp256k1CFunctions.h
index 3981929..8fa0196 100644
--- a/jni/c/headers/java/fr_acinq_secp256k1_Secp256k1CFunctions.h
+++ b/jni/c/headers/java/fr_acinq_secp256k1_Secp256k1CFunctions.h
@@ -357,11 +357,11 @@ JNIEXPORT jint JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1fr
 
 /*
  * Class:     fr_acinq_secp256k1_Secp256k1CFunctions
- * Method:    secp256k1_frost_partial_sig_aggregate
- * Signature: (J[B[[B)[B
+ * Method:    secp256k1_frost_partial_sig_agg
+ * Signature: (J[B[[BI)[B
  */
-JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1frost_1partial_1sig_1aggregate
-  (JNIEnv *, jclass, jlong, jbyteArray, jobjectArray);
+JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1frost_1partial_1sig_1agg
+  (JNIEnv *, jclass, jlong, jbyteArray, jobjectArray, jint);
 
 #ifdef __cplusplus
 }
diff --git a/jni/src/main/java/fr/acinq/secp256k1/Secp256k1CFunctions.java b/jni/src/main/java/fr/acinq/secp256k1/Secp256k1CFunctions.java
index d798063..e98c498 100644
--- a/jni/src/main/java/fr/acinq/secp256k1/Secp256k1CFunctions.java
+++ b/jni/src/main/java/fr/acinq/secp256k1/Secp256k1CFunctions.java
@@ -383,6 +383,16 @@ public class Secp256k1CFunctions {
      */
     public static native int secp256k1_frost_partial_sig_verify(long ctx, byte[] partialSig, byte[] publicNonce, byte[] publicShare, byte[] session, byte[] tweakCache);
 
-    public static native byte[] secp256k1_frost_partial_sig_aggregate(long ctx, byte[] session, byte[][] partialSignatures);
+    /**
+     *  Aggregates partial signatures
+     *
+     * @param ctx pointer to a context object (not secp256k1_context_static)
+     * @param session pointer to the session that was created with frost_nonce_process
+     * @param partialSignatures array of pointers to partial signatures to aggregate
+     * @param n_sigs number of elements in the partial_sigs array. Must be greater than 0.
+     *
+     * @return sig64: complete (but possibly invalid) Schnorr signature
+     */
+    public static native byte[] secp256k1_frost_partial_sig_agg(long ctx, byte[] session, byte[][] partialSignatures, int n_sigs);
 
 }
diff --git a/jni/src/main/kotlin/fr/acinq/secp256k1/NativeSecp256k1.kt b/jni/src/main/kotlin/fr/acinq/secp256k1/NativeSecp256k1.kt
index 8234c21..52d56c1 100644
--- a/jni/src/main/kotlin/fr/acinq/secp256k1/NativeSecp256k1.kt
+++ b/jni/src/main/kotlin/fr/acinq/secp256k1/NativeSecp256k1.kt
@@ -305,10 +305,11 @@ public object NativeSecp256k1 : Secp256k1 {
     }
 
     override fun frostPartialSignatureAggregate(session: ByteArray, partialSignatures: Array<ByteArray>): ByteArray {
-        return Secp256k1CFunctions.secp256k1_frost_partial_sig_aggregate(
+        return Secp256k1CFunctions.secp256k1_frost_partial_sig_agg(
             Secp256k1Context.getContext(),
             session,
-            partialSignatures
+            partialSignatures,
+            partialSignatures.size
         )
     }