diff --git a/src/callbacks/memory_profiler.cpp b/src/callbacks/memory_profiler.cpp
index 0d5cec5d2..6f40705af 100644
--- a/src/callbacks/memory_profiler.cpp
+++ b/src/callbacks/memory_profiler.cpp
@@ -158,7 +158,10 @@ struct MemUsage
   size_t total_mem;
 
   MemUsage(const std::string& r, size_t m) : report(r), total_mem(m) {}
-  bool operator<(const MemUsage& other) { return total_mem < other.total_mem; }
+  bool operator<(const MemUsage& other) const
+  {
+    return total_mem < other.total_mem;
+  }
 };
 } // namespace
 
diff --git a/src/optimizers/adam.cpp b/src/optimizers/adam.cpp
index d00dfbe7c..1d9ad3949 100644
--- a/src/optimizers/adam.cpp
+++ b/src/optimizers/adam.cpp
@@ -34,14 +34,12 @@
 
 namespace lbann {
 
-#if defined (LBANN_HAS_ROCM) && defined (LBANN_HAS_GPU_FP16)
+#if defined(LBANN_HAS_ROCM) && defined(LBANN_HAS_GPU_FP16)
 namespace {
-bool isfinite(fp16 const& x)
-{
-  return std::isfinite(float(x));
-}
-}
+bool isfinite(fp16 const& x) { return std::isfinite(float(x)); }
+} // namespace
 #endif
+using std::isfinite;
 
 template <typename TensorDataType>
 adam<TensorDataType>::adam(TensorDataType learning_rate,