diff --git a/sc2/src/sc2code/libs/uio/io.c b/sc2/src/sc2code/libs/uio/io.c
index db7c0c755..ed57f2704 100644
--- a/sc2/src/sc2code/libs/uio/io.c
+++ b/sc2/src/sc2code/libs/uio/io.c
@@ -651,7 +651,7 @@ uio_lseek(uio_Handle *handle, off_t offset, int whence) {
 	return handle->root->handler->seek(handle, offset, whence);
 }
 
-int
+ssize_t
 uio_write(uio_Handle *handle, const void *buf, size_t count) {
 	if (handle->root->handler->write == NULL) {
 		errno = ENOSYS;
diff --git a/sc2/src/sc2code/libs/uio/io.h b/sc2/src/sc2code/libs/uio/io.h
index 5d4b93af7..036b8c0af 100644
--- a/sc2/src/sc2code/libs/uio/io.h
+++ b/sc2/src/sc2code/libs/uio/io.h
@@ -107,7 +107,7 @@ int uio_rmdir(uio_DirHandle *dirHandle, const char *path);
 
 int uio_lseek(uio_Handle *handle, off_t offset, int whence);
 
-int uio_write(uio_Handle *handle, const void *buf, size_t count);
+ssize_t uio_write(uio_Handle *handle, const void *buf, size_t count);
 
 int uio_unlink(uio_DirHandle *dirHandle, const char *path);
 
diff --git a/sc2/src/sc2code/libs/uio/stdio/stdio.c b/sc2/src/sc2code/libs/uio/stdio/stdio.c
index 23fdf2763..dbc0d0a9b 100644
--- a/sc2/src/sc2code/libs/uio/stdio/stdio.c
+++ b/sc2/src/sc2code/libs/uio/stdio/stdio.c
@@ -248,7 +248,7 @@ stdio_seek(uio_Handle *handle, off_t offset, int whence) {
 	return lseek(handle->native->fd, offset, whence);
 }
 
-int
+ssize_t
 stdio_write(uio_Handle *handle, const void *buf, size_t count) {
 	return write(handle->native->fd, buf, count);
 }
diff --git a/sc2/src/sc2code/libs/uio/stdio/stdio.h b/sc2/src/sc2code/libs/uio/stdio/stdio.h
index b231c5c7e..a1145fd29 100644
--- a/sc2/src/sc2code/libs/uio/stdio/stdio.h
+++ b/sc2/src/sc2code/libs/uio/stdio/stdio.h
@@ -89,7 +89,7 @@ int stdio_stat(uio_PDirHandle *pDirHandle, const char *name,
 ssize_t stdio_read(uio_Handle *handle, void *buf, size_t count);
 int stdio_rmdir(uio_PDirHandle *pDirHandle, const char *name);
 off_t stdio_seek(uio_Handle *handle, off_t offset, int whence);
-int stdio_write(uio_Handle *handle, const void *buf, size_t count);
+ssize_t stdio_write(uio_Handle *handle, const void *buf, size_t count);
 int stdio_unlink(uio_PDirHandle *pDirHandle, const char *name);
 
 stdio_EntriesIterator *stdio_openEntries(uio_PDirHandle *pDirHandle);