diff --git a/device_tree.c b/device_tree.c
index 426a631..21be070 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -74,7 +74,7 @@ fail:
 }
 
 int qemu_devtree_setprop(void *fdt, const char *node_path,
-                         const char *property, uint32_t *val_array, int size)
+                         const char *property, void *val_array, int size)
 {
     int offset;
 
diff --git a/device_tree.h b/device_tree.h
index f05c4e7..cecd98f 100644
--- a/device_tree.h
+++ b/device_tree.h
@@ -17,7 +17,7 @@
 void *load_device_tree(const char *filename_path, int *sizep);
 
 int qemu_devtree_setprop(void *fdt, const char *node_path,
-                         const char *property, uint32_t *val_array, int size);
+                         const char *property, void *val_array, int size);
 int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
                               const char *property, uint32_t val);
 int qemu_devtree_setprop_string(void *fdt, const char *node_path,