diff --git a/src/build/libroot/fs.cpp b/src/build/libroot/fs.cpp
index c298454647..5a9ebdfb09 100644
--- a/src/build/libroot/fs.cpp
+++ b/src/build/libroot/fs.cpp
@@ -609,6 +609,7 @@ _kern_read_dir(int fd, struct dirent *buffer, size_t bufferSize,
 
 	// get the next entry
 	dirent *entry;
+	errno = 0;
 	if (dynamic_cast<AttrDirDescriptor*>(descriptor))
 		entry = fs_read_attr_dir(descriptor->dir);
 	else