diff --git a/faiss/Clustering.cpp b/faiss/Clustering.cpp
index 0e46b7d5a..546d17782 100644
--- a/faiss/Clustering.cpp
+++ b/faiss/Clustering.cpp
@@ -289,7 +289,7 @@ void Clustering::train_encoded (idx_t nx, const uint8_t *x_in,
         // reports.
         const float *x = reinterpret_cast<const float *>(x_in);
         for (size_t i = 0; i < nx * d; i++) {
-            FAISS_THROW_IF_NOT_MSG (finite (x[i]),
+            FAISS_THROW_IF_NOT_MSG (std::isfinite (x[i]),
                                     "input contains NaN's or Inf's");
         }
     }