diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50282ed1cd..84e8ea2874 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -911,7 +911,7 @@ if(SDL_ASSEMBLY)
 
     if(SDL_LSX)
       cmake_push_check_state()
-      list(APPEND CMAKE_REQUIRED_FLAGS "-mlsx")
+      set(CMAKE_REQUIRED_FLAGS "-mlsx")
       check_c_source_compiles("
           #ifndef __loongarch_sx
           #error Assembler CPP flag not enabled
@@ -928,7 +928,7 @@ if(SDL_ASSEMBLY)
 
     if(SDL_LASX)
       cmake_push_check_state()
-      list(APPEND CMAKE_REQUIRED_FLAGS "-mlasx")
+      set(CMAKE_REQUIRED_FLAGS "-mlasx")
       check_c_source_compiles("
           #ifndef __loongarch_asx
           #error Assembler CPP flag not enabled
diff --git a/src/video/yuv2rgb/yuv_rgb_lsx.c b/src/video/yuv2rgb/yuv_rgb_lsx.c
index 8d84dd142a..f24a05276d 100644
--- a/src/video/yuv2rgb/yuv_rgb_lsx.c
+++ b/src/video/yuv2rgb/yuv_rgb_lsx.c
@@ -4,7 +4,7 @@
 
 #if SDL_HAVE_YUV
 #include "yuv_rgb.h"
-
+#include "yuv_rgb_internal.h"
 #include "SDL_cpuinfo.h"
 
 #ifdef __loongarch_sx