diff --git a/cmake/OpenCVFindLAPACK.cmake b/cmake/OpenCVFindLAPACK.cmake
index 09cd66cdae4faca1319aa4368a0616d90f7d3467..e281b4b78c4a91ae8713da6c3b4b8986717a94c1 100644
--- a/cmake/OpenCVFindLAPACK.cmake
+++ b/cmake/OpenCVFindLAPACK.cmake
@@ -136,6 +136,10 @@ if(WITH_LAPACK)
         unset(LAPACK_LIBRARIES)
         unset(LAPACK_LIBRARIES CACHE)
       endif()
+    else()
+      # LAPACK not found
+      unset(LAPACK_LIBRARIES)
+      unset(LAPACK_LIBRARIES CACHE)
     endif()
   endif()