diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index c6813ee..c103379 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -34,6 +34,7 @@
 
 Other Changes:
 
+- Fixed a build issue with non-Cygwin GCC under Windows.
 - Examples: OpenGL3: Fixed error condition when using the GLAD loader. (#2059, #2002). [@jiri]
 
 
diff --git a/imgui.cpp b/imgui.cpp
index 5642485..4af7604 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1506,7 +1506,7 @@
 
 FILE* ImFileOpen(const char* filename, const char* mode)
 {
-#if defined(_WIN32) && !defined(__CYGWIN__)
+#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__GNUC__)
     // We need a fopen() wrapper because MSVC/Windows fopen doesn't handle UTF-8 filenames. Converting both strings from UTF-8 to wchar format (using a single allocation, because we can)
     const int filename_wsize = ImTextCountCharsFromUtf8(filename, NULL) + 1;
     const int mode_wsize = ImTextCountCharsFromUtf8(mode, NULL) + 1;