diff --git a/include/mcl/she.hpp b/include/mcl/she.hpp
index ccfcaf81..bd66058b 100644
--- a/include/mcl/she.hpp
+++ b/include/mcl/she.hpp
@@ -832,7 +832,7 @@ struct SHET {
 #endif
 		int64_t dec(const CipherTextG1& c, bool *pok = 0) const
 		{
-			if (useDecG1ViaGT_) return decViaGT(c);
+			if (useDecG1ViaGT_) return decViaGT(c, pok);
 			/*
 				S = mP + rxP
 				T = rP
@@ -845,7 +845,7 @@ struct SHET {
 		}
 		int64_t dec(const CipherTextG2& c, bool *pok = 0) const
 		{
-			if (useDecG2ViaGT_) return decViaGT(c);
+			if (useDecG2ViaGT_) return decViaGT(c, pok);
 			G2 R;
 			G2::mul(R, c.T_, y_);
 			G2::sub(R, c.S_, R);
diff --git a/src/she_c_impl.hpp b/src/she_c_impl.hpp
index d07dcfcd..9f9fa707 100644
--- a/src/she_c_impl.hpp
+++ b/src/she_c_impl.hpp
@@ -440,12 +440,10 @@ int shePrecomputedPublicKeyEncWithZkpBinEq(sheCipherTextG1 *c1, sheCipherTextG2
 
 template<class CT>
 int decT(mclInt *m, const sheSecretKey *sec, const CT *c)
-	try
 {
-	*m = (cast(sec)->dec)(*cast(c));
-	return 0;
-} catch (std::exception&) {
-	return -1;
+	bool b;
+	*m = (cast(sec)->dec)(*cast(c), &b);
+	return b ? 0 : -1;
 }
 
 int sheDecG1(mclInt *m, const sheSecretKey *sec, const sheCipherTextG1 *c)