diff --git a/Modules/FindBLAS.cmake b/Modules/FindBLAS.cmake
index 551864e224..fba18c4237 100644
--- a/Modules/FindBLAS.cmake
+++ b/Modules/FindBLAS.cmake
@@ -1122,9 +1122,9 @@ if(BLA_VENDOR MATCHES "ACML" OR BLA_VENDOR STREQUAL "All")
   else()
     file(GLOB _ACML_GPU_ROOT "/opt/acml*/GPGPUexamples")
   endif()
-  list(GET _ACML_ROOT 0 _ACML_ROOT)
-  list(GET _ACML_GPU_ROOT 0 _ACML_GPU_ROOT)
   if(_ACML_ROOT)
+    list(GET _ACML_ROOT 0 _ACML_ROOT)
+    list(GET _ACML_GPU_ROOT 0 _ACML_GPU_ROOT)
     get_filename_component(_ACML_ROOT ${_ACML_ROOT} PATH)
     if(_blas_sizeof_integer EQUAL 8)
       set(_ACML_PATH_SUFFIX "_int64")