diff --git a/include/tmp/file b/include/tmp/file
index 986235f..bb4a84a 100644
--- a/include/tmp/file
+++ b/include/tmp/file
@@ -80,8 +80,7 @@ public:
   /// Returns the size of this file
   /// @param[out] ec Parameter for error reporting
   /// @returns the size of this file, in bytes
-  /// @throws std::filesystem::filesystem_error if cannot get a file size
-  std::uintmax_t size(std::error_code& ec) const;
+  std::uintmax_t size(std::error_code& ec) const noexcept;
 
   /// Reads the entire contents of this file
   /// @returns A string with this file contents
diff --git a/src/file.cpp b/src/file.cpp
index 7ab3d17..8d61ad4 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -143,7 +143,7 @@ std::uintmax_t file::size() const {
   return result;
 }
 
-std::uintmax_t file::size(std::error_code& ec) const {
+std::uintmax_t file::size(std::error_code& ec) const noexcept {
 #ifdef _WIN32
   LARGE_INTERGER size;
   if (!GetFileSize(native_handle(), &size)) {