diff --git a/common/src/KokkosFFT_Helpers.hpp b/common/src/KokkosFFT_Helpers.hpp
index 86e5f95c..d05d2cbc 100644
--- a/common/src/KokkosFFT_Helpers.hpp
+++ b/common/src/KokkosFFT_Helpers.hpp
@@ -23,12 +23,12 @@ auto get_shift(const ViewType& inout, axis_type<DIM> _axes, int direction = 1) {
 
   // Assert if the elements are overlapped
   constexpr int rank = ViewType::rank();
-  check_precondition(!KokkosFFT::Impl::has_duplicate_values(axes),
-                     "axes are overlapped");
-  check_precondition(
+  KOKKOSFFT_EXPECTS(!KokkosFFT::Impl::has_duplicate_values(axes),
+                    "Axes overlap");
+  KOKKOSFFT_EXPECTS(
       !KokkosFFT::Impl::is_out_of_range_value_included(axes, rank),
-      "axes include out of range index."
-      "axes should be in the range of [-rank, rank-1].");
+      "Axes include an out-of-range index."
+      "Axes must be in the range of [-rank, rank-1].");
 
   axis_type<rank> shift = {0};
   for (int i = 0; i < static_cast<int>(DIM); i++) {
diff --git a/common/src/KokkosFFT_layouts.hpp b/common/src/KokkosFFT_layouts.hpp
index 85441edc..065b898c 100644
--- a/common/src/KokkosFFT_layouts.hpp
+++ b/common/src/KokkosFFT_layouts.hpp
@@ -67,12 +67,11 @@ auto get_extents(const InViewType& in, const OutViewType& out,
   if (is_real_v<in_value_type>) {
     // Then R2C
     if (is_complex_v<out_value_type>) {
-      if (_out_extents.at(inner_most_axis) !=
-          _in_extents.at(inner_most_axis) / 2 + 1) {
-        throw std::runtime_error(
-            "For R2C, the output extent of transform should be input extent / "
-            "2 + 1");
-      }
+      KOKKOSFFT_EXPECTS(
+          _out_extents.at(inner_most_axis) ==
+              _in_extents.at(inner_most_axis) / 2 + 1,
+          "For R2C, the 'output extent' of transform must be equal to "
+          "'input extent'/2 + 1");
     } else {
       throw std::runtime_error(
           "If the input type is real, the output type should be complex");
@@ -82,12 +81,11 @@ auto get_extents(const InViewType& in, const OutViewType& out,
   if (is_real_v<out_value_type>) {
     // Then C2R
     if (is_complex_v<in_value_type>) {
-      if (_in_extents.at(inner_most_axis) !=
-          _out_extents.at(inner_most_axis) / 2 + 1) {
-        throw std::runtime_error(
-            "For C2R, the input extent of transform should be output extent / "
-            "2 + 1");
-      }
+      KOKKOSFFT_EXPECTS(
+          _in_extents.at(inner_most_axis) ==
+              _out_extents.at(inner_most_axis) / 2 + 1,
+          "For C2R, the 'input extent' of transform must be equal to "
+          "'output extent' / 2 + 1");
     } else {
       throw std::runtime_error(
           "If the output type is real, the input type should be complex");
diff --git a/common/src/KokkosFFT_padding.hpp b/common/src/KokkosFFT_padding.hpp
index b672d1c2..3fc059be 100644
--- a/common/src/KokkosFFT_padding.hpp
+++ b/common/src/KokkosFFT_padding.hpp
@@ -51,14 +51,12 @@ auto get_modified_shape(const InViewType in, const OutViewType /* out */,
   }
 
   // Assert if the elements are overlapped
-  if (KokkosFFT::Impl::has_duplicate_values(positive_axes)) {
-    throw std::runtime_error("get_modified_shape: axes are overlapped.");
-  }
-  if (KokkosFFT::Impl::is_out_of_range_value_included(positive_axes, rank)) {
-    throw std::runtime_error(
-        "get_modified_shape: axes include out of range index."
-        "axes should be in the range of [-rank, rank-1].");
-  }
+  KOKKOSFFT_EXPECTS(!KokkosFFT::Impl::has_duplicate_values(positive_axes),
+                    "Axes overlap");
+  KOKKOSFFT_EXPECTS(
+      !KokkosFFT::Impl::is_out_of_range_value_included(positive_axes, rank),
+      "Axes include an out-of-range index."
+      "Axes must be in the range of [-rank, rank-1].");
 
   using full_shape_type = shape_type<rank>;
   full_shape_type modified_shape;
diff --git a/common/src/KokkosFFT_utils.hpp b/common/src/KokkosFFT_utils.hpp
index 00bd6764..48492759 100644
--- a/common/src/KokkosFFT_utils.hpp
+++ b/common/src/KokkosFFT_utils.hpp
@@ -50,26 +50,21 @@ inline void check_precondition(const bool expression,
   }
   throw std::runtime_error(ss.str());
 }
-inline void check_precondition(const bool expression, const std::string& msg,
-                               const char* file_name, int line,
-                               const char* function_name) {
-  std::stringstream ss("file: ");
-  ss << file_name << '(' << line << ") `" << function_name << "`: " << msg
-     << '\n';
-  if (!expression) {
-    throw std::runtime_error(ss.str());
-  }
-}
-#endif
 
 template <typename ViewType>
 auto convert_negative_axis(ViewType, int _axis = -1) {
   static_assert(Kokkos::is_view<ViewType>::value,
                 "convert_negative_axis: ViewType is not a Kokkos::View.");
   int rank = static_cast<int>(ViewType::rank());
+<<<<<<< HEAD
   if (_axis < -rank || _axis >= rank) {
     throw std::runtime_error("axis should be in [-rank, rank-1]");
   }
+=======
+
+  KOKKOSFFT_EXPECTS(_axis >= -rank && _axis < rank,
+                    "Axis must be in [-rank, rank-1]");
+>>>>>>> a786585 (improve assertion)
 
   int axis = _axis < 0 ? rank + _axis : _axis;
   return axis;