diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1e4917cd..6b4a8587 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -34,7 +34,6 @@ add_library( exiv2lib_int OBJECT
     tiffimage_int.cpp       tiffimage_int.hpp
     tiffvisitor_int.cpp     tiffvisitor_int.hpp
     tifffwd_int.hpp
-    timegm.h
     unused.h
     utils.hpp               utils.cpp
 )
diff --git a/src/timegm.h b/src/timegm.h
deleted file mode 100644
index c95189d5..00000000
--- a/src/timegm.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#pragma once
-#include <ctime>
-
-#ifdef  __cplusplus	
-extern "C" {	
-#endif
-
-// The UTC version of mktime
-/* timegm is replaced with _mkgmtime on Windows (msvc && mingw) */
-#if defined(_MSC_VER)
-#define timegm _mkgmtime
-#endif
-
-#if defined(__MINGW__)
-time_t timegm(struct tm * const tmp);
-#endif
-
-#ifdef  __cplusplus	
-}	
-#endif
-