diff --git a/backends/cxxrtl/cxxrtl.h b/backends/cxxrtl/cxxrtl.h
index 701510b7f..7b91742e0 100644
--- a/backends/cxxrtl/cxxrtl.h
+++ b/backends/cxxrtl/cxxrtl.h
@@ -921,7 +921,7 @@ value<BitsY> sshr_uu(const value<BitsA> &a, const value<BitsB> &b) {
 
 template<size_t BitsY, size_t BitsA, size_t BitsB>
 value<BitsY> sshr_su(const value<BitsA> &a, const value<BitsB> &b) {
-	return a.template shr(b).template scast<BitsY>();
+	return a.template sshr(b).template scast<BitsY>();
 }
 
 template<size_t BitsY, size_t BitsA, size_t BitsB>