diff --git a/secp256k1-zkp-sys/depend/secp256k1/src/modules/surjection/surjection_impl.h b/secp256k1-zkp-sys/depend/secp256k1/src/modules/surjection/surjection_impl.h
index e125cbc..8ac4fbe 100644
--- a/secp256k1-zkp-sys/depend/secp256k1/src/modules/surjection/surjection_impl.h
+++ b/secp256k1-zkp-sys/depend/secp256k1/src/modules/surjection/surjection_impl.h
@@ -7,7 +7,6 @@
 #ifndef SECP256K1_SURJECTION_IMPL_H
 #define SECP256K1_SURJECTION_IMPL_H
 
-#include <assert.h>
 #include <string.h>
 
 #include "../../eckey.h"