diff --git a/src/inode2filename/inode.cc b/src/inode2filename/inode.cc
index cc665ea..f0e956b 100644
--- a/src/inode2filename/inode.cc
+++ b/src/inode2filename/inode.cc
@@ -22,6 +22,7 @@
 #include <vector>
 
 #include <sys/sysmacros.h>
+#include <sys/types.h>
 
 using android::base::ParseUint;
 
@@ -84,4 +85,4 @@
 static_assert(std::is_same_v<iorap::inode2filename::dev_t, dev_t>);
 static_assert(std::is_same_v<iorap::inode2filename::ino_t, ino_t>);
 
-// TODO: consider some tests for major, minor, etc.
\ No newline at end of file
+// TODO: consider some tests for major, minor, etc.