diff --git a/build/README.md b/build/README.md
index 3eba6153bd1b3a683b9e3d9eb8995a572b2bb889..a873c7d103077d8dbc81dea056f79cccf5349d10 100644
--- a/build/README.md
+++ b/build/README.md
@@ -16,7 +16,7 @@ This section describes the use of the pre-existing programs, once the binaries h
 2. run edfb (./edfb)
 3. run clu (./clu)
 
-NOTE: both edfb and sph expect an input which is assumed to be in a folder named "../../test_data/sphere/" (i.e. two levels above the current execution path)
+NOTE: both edfb and sph expect an input which is assumed to be in a folder named "../../test_data/cluster/" (i.e. two levels above the current execution path)
 
 TODO: set up a code variable to locate the input data (data file paths should not be hard-coded)