diff --git a/Imath.spec b/Imath.spec
index 2caccab3abcee91f9e864ca3e6b230cc33895802..9b0647b15fc87fe9037eb1c8a85cb439fa341737 100644
--- a/Imath.spec
+++ b/Imath.spec
@@ -2,12 +2,13 @@
 %global sover 29
 Name:                Imath
 Version:             3.1.4
-Release:             1
+Release:             2
 Summary:             Library of 2D and 3D vector, matrix, and math operations for computer graphics
 License:             BSD
 URL:                 https://github.com/AcademySoftwareFoundation/Imath
 Source0:             https://github.com/AcademySoftwareFoundation/%{srcname}/archive/v%{version}/%{srcname}-%{version}.tar.gz
 Patch0:              Imath-python-test.patch
+Patch1:              Use-_WIN32-instead-of-_MSC_VER-to-fix-mingw-build-24.patch
 BuildRequires:       cmake gcc gcc-c++ make boost-devel python3-devel
 BuildRequires:       python3-breathe python3-numpy doxygen python3-sphinx
 %description
@@ -73,5 +74,8 @@ make test
 %{_libdir}/libPyImath_Python3_9-3_1.so
 
 %changelog
+* Wed Dec 27 fandehui <fandehui@xfusion.com> - 2.1.4-2
+- Use _WIN32 instead of _MSC_VER to fix mingw build (#245)
+
 * Mon Feb 7 2022 liyanan <liyanan32@huawei.com> - 3.1.4-1
 - package init
diff --git a/Use-_WIN32-instead-of-_MSC_VER-to-fix-mingw-build-24.patch b/Use-_WIN32-instead-of-_MSC_VER-to-fix-mingw-build-24.patch
new file mode 100644
index 0000000000000000000000000000000000000000..75b8e6820ada78dcb57099e90d872ce586e61422
--- /dev/null
+++ b/Use-_WIN32-instead-of-_MSC_VER-to-fix-mingw-build-24.patch
@@ -0,0 +1,59 @@
+From 8dfb8e613edf56732e9bd4a7e72cd65aa0e07bc5 Mon Sep 17 00:00:00 2001
+From: Cary Phillips <cary@ilm.com>
+Date: Wed, 16 Mar 2022 17:16:35 -0700
+Subject: [PATCH] Use _WIN32 instead of _MSC_VER to fix mingw build (#245)
+
+* Use _WIN32 instead of _MSC_VER to fix mingw build
+
+Signed-off-by: Cary Phillips <cary@ilm.com>
+
+* fix formatting
+
+Signed-off-by: Cary Phillips <cary@ilm.com>
+---
+ src/ImathTest/half_perf_test.cpp | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/src/ImathTest/half_perf_test.cpp b/src/ImathTest/half_perf_test.cpp
+index 81fe82e..f1ee599 100644
+--- a/src/ImathTest/half_perf_test.cpp
++++ b/src/ImathTest/half_perf_test.cpp
+@@ -3,7 +3,7 @@
+ // Copyright Contributors to the OpenEXR Project.
+ //
+ 
+-#ifdef _MSC_VER
++#ifdef _WIN32
+ #    define _CRT_RAND_S
+ #endif
+ 
+@@ -14,7 +14,7 @@
+ #include <stdlib.h>
+ #include <limits.h>
+ #include <string.h>
+-#ifdef _MSC_VER
++#ifdef _WIN32
+ #    include <windows.h>
+ #else
+ #    include <time.h>
+@@ -267,7 +267,7 @@ static inline half exptable_half_constructor(float f)
+ int64_t
+ get_ticks (void)
+ {
+-#ifdef _MSC_VER
++#ifdef _WIN32
+     static uint64_t scale = 0;
+     if (scale == 0)
+     {
+@@ -381,7 +381,7 @@ main (int argc, char* argv[])
+             perf_test_half_to_float (floats, halfs, numentries);
+ 
+             // test float -> half with real-world values
+-#ifdef _MSC_VER
++#ifdef _WIN32
+             unsigned int rv;
+             for (int i = 0; i < numentries; ++i)
+             {
+-- 
+2.42.0.windows.2
+