diff --git a/headers/os/storage/File.h b/headers/os/storage/File.h
index c30ba6e11d..dd75c192d8 100644
--- a/headers/os/storage/File.h
+++ b/headers/os/storage/File.h
@@ -37,7 +37,7 @@ public:
 	BFile(const entry_ref *ref, uint32 openMode);
 	BFile(const BEntry *entry, uint32 openMode);
 	BFile(const char *path, uint32 openMode);
-	BFile(BDirectory *dir, const char *path, uint32 openMode);
+	BFile(const BDirectory *dir, const char *path, uint32 openMode);
 	virtual ~BFile();
 
 	status_t SetTo(const entry_ref *ref, uint32 openMode);
diff --git a/src/kits/storage/File.cpp b/src/kits/storage/File.cpp
index 5b9dadf343..d69daecadf 100644
--- a/src/kits/storage/File.cpp
+++ b/src/kits/storage/File.cpp
@@ -94,7 +94,7 @@ BFile::BFile(const char *path, uint32 openMode)
 	\param openMode the mode in which the file should be opened
 	\see SetTo() for values for \a openMode
 */
-BFile::BFile(BDirectory *dir, const char *path, uint32 openMode)
+BFile::BFile(const BDirectory *dir, const char *path, uint32 openMode)
 	 : BNode(),
 	   BPositionIO(),
 	   fMode(0)