diff --git a/022div.cc b/021div.cc
similarity index 100%
rename from 022div.cc
rename to 021div.cc
diff --git a/023float.cc b/022float.cc
similarity index 100%
rename from 023float.cc
rename to 022float.cc
diff --git a/020syscalls.cc b/029syscalls.cc
similarity index 100%
rename from 020syscalls.cc
rename to 029syscalls.cc