diff --git a/lapack/CMakeLists.txt b/lapack/CMakeLists.txt
index 69e1dabe0..fbecd6624 100644
--- a/lapack/CMakeLists.txt
+++ b/lapack/CMakeLists.txt
@@ -137,6 +137,7 @@ if(EXISTS ${eigen_full_path_to_testing_lapack})
   add_subdirectory(testing/MATGEN)
   add_subdirectory(testing/LIN)
   add_subdirectory(testing/EIG)
+  cmake_policy(SET CMP0026 OLD)
   macro(add_lapack_test output input target)
     set(TEST_INPUT "${LAPACK_SOURCE_DIR}/testing/${input}")
     set(TEST_OUTPUT "${LAPACK_BINARY_DIR}/TESTING/${output}")