diff --git a/.gitignore b/.gitignore
index 40eeedad7..c7921345c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,7 +16,7 @@ include/cantera/base/system.h.gch
 include/cantera/ext/
 interfaces/matlab/ctpath.m
 interfaces/matlab/Contents.m
-interfaces/matlab_experimental/ctRoot.m
+interfaces/matlab_experimental/Utility/ctRoot.m
 src/extensions/delegator.h
 stage/
 .sconsign.dblite