diff --git a/expat/.gitignore b/expat/.gitignore
index 1556d70a..38a5268f 100644
--- a/expat/.gitignore
+++ b/expat/.gitignore
@@ -1,6 +1,5 @@
 /autom4te.cache/
 /cmake-build-debug/
-m4/
 CMakeFiles/
 Testing/
 aclocal.m4
diff --git a/expat/m4/.gitignore b/expat/m4/.gitignore
new file mode 100644
index 00000000..f0636865
--- /dev/null
+++ b/expat/m4/.gitignore
@@ -0,0 +1 @@
+/*.m4