diff --git a/src/.gitignore b/src/.gitignore
index 5f47a58b73..e557a8cbb2 100644
--- a/src/.gitignore
+++ b/src/.gitignore
@@ -192,6 +192,8 @@
 /colvarproxy_lammps_version.h
 /fix_colvars.cpp
 /fix_colvars.h
+/inthash.cpp
+/inthash.h
 /fix_plumed.cpp
 /fix_plumed.h
 /dump_molfile.cpp