diff --git a/native/jni/utils/file.cpp b/native/jni/utils/file.cpp
index 6329bd89e..9f92d0bde 100644
--- a/native/jni/utils/file.cpp
+++ b/native/jni/utils/file.cpp
@@ -331,10 +331,6 @@ void *__mmap(const char *filename, size_t *size, bool rw) {
 	return buf;
 }
 
-void mmap_ro(const char *filename, void **buf, size_t *size) {
-	*buf = __mmap(filename, size, false);
-}
-
 void fd_full_read(int fd, void **buf, size_t *size) {
 	*size = lseek(fd, 0, SEEK_END);
 	lseek(fd, 0, SEEK_SET);
diff --git a/native/jni/utils/include/utils.h b/native/jni/utils/include/utils.h
index d88aa7b6d..8574eb054 100644
--- a/native/jni/utils/include/utils.h
+++ b/native/jni/utils/include/utils.h
@@ -118,7 +118,6 @@ int setattrat(int dirfd, const char *name, struct file_attr *a);
 int fsetattr(int fd, struct file_attr *a);
 void fclone_attr(int sourcefd, int targetfd);
 void clone_attr(const char *source, const char *target);
-void mmap_ro(const char *filename, void **buf, size_t *size);
 void fd_full_read(int fd, void **buf, size_t *size);
 void full_read(const char *filename, void **buf, size_t *size);
 void write_zero(int fd, size_t size);