diff --git a/Project/GNU/Library/configure.ac b/Project/GNU/Library/configure.ac
index f38660a92..0ec8f9f11 100644
--- a/Project/GNU/Library/configure.ac
+++ b/Project/GNU/Library/configure.ac
@@ -981,7 +981,7 @@ dnl Unicode
 dnl
 if test "$enable_unicode" = "yes"; then
 	CXXFLAGS="$CXXFLAGS -DUNICODE"
-	MediaInfoLib_CXXFLAGS="$MediaInfoLib_CXXFLAGS -DUNICODE -FMT_UNICODE=0"
+	MediaInfoLib_CXXFLAGS="$MediaInfoLib_CXXFLAGS -DUNICODE -DFMT_UNICODE=0"
 	MediaInfoLib_Unicode="yes"
 else
 	MediaInfoLib_Unicode="no"