diff --git a/CMake/GenPkgConfig.cmake b/CMake/GenPkgConfig.cmake
index 0e93175bd..9de854022 100644
--- a/CMake/GenPkgConfig.cmake
+++ b/CMake/GenPkgConfig.cmake
@@ -103,6 +103,11 @@ function(gen_pkgconfig_vars)
       "<COMPILE_LANG_AND_ID:CUDA,NVIDIA>" "<COMPILE_LANGUAGE:CUDA>"
       cflags "${cflags}"
     )
+
+  endif()
+  # patch for fmt's generator expression on older CMake
+  if (MSVC)
+    string(REPLACE "$<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:MSVC>>:/utf-8>" "/utf-8" cflags "${cflags}")
   endif()

   set("${var_prefix}_CFLAGS" "${cflags}" PARENT_SCOPE)
--
2.34.1