diff --git a/reactos/apps/tests/button/.cvsignore b/reactos/apps/tests/button/.cvsignore
index 48d0d27aea4..1cf34584fdc 100644
--- a/reactos/apps/tests/button/.cvsignore
+++ b/reactos/apps/tests/button/.cvsignore
@@ -3,4 +3,5 @@ statst.nostrip.exe
 statst.sym
 statst.coff
 *.d
-*.o*.map
+*.o
+*.map
diff --git a/reactos/subsys/system/explorer/.cvsignore b/reactos/subsys/system/explorer/.cvsignore
new file mode 100644
index 00000000000..f11780de771
--- /dev/null
+++ b/reactos/subsys/system/explorer/.cvsignore
@@ -0,0 +1,6 @@
+*.coff
+*.exe
+*.d
+*.o
+*.sym
+*.map