diff --git a/libs/vkd3d-shader/vkd3d_shader_main.c b/libs/vkd3d-shader/vkd3d_shader_main.c
index a7b42217..18456480 100644
--- a/libs/vkd3d-shader/vkd3d_shader_main.c
+++ b/libs/vkd3d-shader/vkd3d_shader_main.c
@@ -2004,7 +2004,7 @@ void *shader_param_allocator_get(struct vkd3d_shader_param_allocator *allocator,
 {
     void *params;
 
-    if (count > allocator->count - allocator->index)
+    if (!allocator->current || count > allocator->count - allocator->index)
     {
         struct vkd3d_shader_param_node *next;