diff --git a/faiss/IndexFlatCodes.cpp b/faiss/IndexFlatCodes.cpp
index 5ebe7ed2d1..eb52c76922 100644
--- a/faiss/IndexFlatCodes.cpp
+++ b/faiss/IndexFlatCodes.cpp
@@ -20,8 +20,6 @@ IndexFlatCodes::IndexFlatCodes(size_t code_size, idx_t d, MetricType metric)
 
 IndexFlatCodes::IndexFlatCodes() : code_size(0) {}
 
-IndexFlatCodes::~IndexFlatCodes() {}
-
 void IndexFlatCodes::add(idx_t n, const float* x) {
     FAISS_THROW_IF_NOT(is_trained);
     if (n == 0) {
diff --git a/faiss/IndexFlatCodes.h b/faiss/IndexFlatCodes.h
index a8d603ee1c..677f3eead4 100644
--- a/faiss/IndexFlatCodes.h
+++ b/faiss/IndexFlatCodes.h
@@ -27,8 +27,6 @@ struct IndexFlatCodes : Index {
 
     IndexFlatCodes();
 
-    ~IndexFlatCodes() override;
-
     IndexFlatCodes(size_t code_size, idx_t d, MetricType metric = METRIC_L2);
 
     /// default add uses sa_encode