diff --git a/cmake/BuildVulkanShaders.cmake b/cmake/BuildVulkanShaders.cmake
index f2bcdbe1c..a75fbef15 100644
--- a/cmake/BuildVulkanShaders.cmake
+++ b/cmake/BuildVulkanShaders.cmake
@@ -162,9 +162,15 @@ if(NOT FOUND_MATCHING_SHA256_FILE)
   generate_shader_file("-DTW_QUAD_TEXTURED" "-DTW_PUSH_CONST" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.frag" "data/shader/vulkan/quad_push_textured.frag.spv")
   generate_shader_file("-DTW_QUAD_TEXTURED" "-DTW_PUSH_CONST" "${PROJECT_SOURCE_DIR}/data/shader/vulkan/quad.vert" "data/shader/vulkan/quad_push_textured.vert.spv")
 
-  execute_process(${GLSLANG_VALIDATOR_COMMAND_LIST})
+  execute_process(${GLSLANG_VALIDATOR_COMMAND_LIST} RESULT_VARIABLE STATUS)
+  if(STATUS AND NOT STATUS EQUAL 0)
+    message(FATAL_ERROR "${GLSLANG_VALIDATOR_COMMAND_LIST} failed")
+  endif()
   if(SPIRV_OPTIMIZER_PROGRAM_FOUND)
-    execute_process(${SPIRV_OPTIMIZER_COMMAND_LIST})
+    execute_process(${SPIRV_OPTIMIZER_COMMAND_LIST} RESULT_VARIABLE STATUS)
+    if(STATUS AND NOT STATUS EQUAL 0)
+      message(FATAL_ERROR "${SPIRV_OPTIMIZER_COMMAND_LIST} failed")
+    endif()
     file(REMOVE ${GLSLANG_VALIDATOR_DELETE_LIST})
   endif()