diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index 7d96d04d9971fc5b0629c88dcfee7fb2928756f6..53700c86511ee90a309470fea0e8db16f3696aa0 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -876,11 +876,10 @@ void SplitFilename83(const std::string& filename, std::array<char, 9>& short_nam
 }
 
 IOFile::IOFile()
-    : m_file(nullptr), m_good(true)
-{}
+{
+}
 
 IOFile::IOFile(const std::string& filename, const char openmode[])
-    : m_file(nullptr), m_good(true)
 {
     Open(filename, openmode);
 }
@@ -891,7 +890,6 @@ IOFile::~IOFile()
 }
 
 IOFile::IOFile(IOFile&& other)
-    : m_file(nullptr), m_good(true)
 {
     Swap(other);
 }
diff --git a/src/common/file_util.h b/src/common/file_util.h
index d520130cef05ba7036d2f75b8892f9395c940946..b54a9fb72b1eb90d0b7e334d6013fa118c682913 100644
--- a/src/common/file_util.h
+++ b/src/common/file_util.h
@@ -256,8 +256,8 @@ public:
     void Clear() { m_good = true; std::clearerr(m_file); }
 
 private:
-    std::FILE* m_file;
-    bool m_good;
+    std::FILE* m_file = nullptr;
+    bool m_good = true;
 };
 
 }  // namespace