--- a/Utilities/vtkhdf5/ConfigureChecks.cmake
+++ b/Utilities/vtkhdf5/ConfigureChecks.cmake
@@ -75,14 +75,14 @@ IF (HDF5_WANT_DCONV_EXCEPTION)
 ENDIF (HDF5_WANT_DCONV_EXCEPTION)
 
 SET (LINUX_LFS 0)
-IF (CMAKE_SYSTEM MATCHES "Linux-([3-9]\\.[0-9]|2\\.[4-9])\\.")
+IF (CMAKE_SYSTEM MATCHES "Linux")
   # Linux Specific flags
   ADD_DEFINITIONS (-D_POSIX_SOURCE -D_BSD_SOURCE)
   OPTION (HDF5_ENABLE_LARGE_FILE "Enable support for large (64-bit) files on Linux." ON)
   IF (HDF5_ENABLE_LARGE_FILE)
     SET (LARGEFILE 1)
   ENDIF (HDF5_ENABLE_LARGE_FILE)
-ENDIF (CMAKE_SYSTEM MATCHES "Linux-([3-9]\\.[0-9]|2\\.[4-9])\\.")
+ENDIF (CMAKE_SYSTEM MATCHES "Linux")
 SET (HDF5_EXTRA_FLAGS)
 IF (LINUX_LFS)
   SET (HDF5_EXTRA_FLAGS -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE)