diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index 3b68bb49cc1..34e76ffb721 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -3772,6 +3772,7 @@ lookup_vs_prolog(struct radv_cmd_buffer *cmd_buffer, const struct radv_shader *v
 
    const bool can_use_simple_input =
       cmd_buffer->state.shaders[MESA_SHADER_VERTEX] &&
+      !cmd_buffer->state.shaders[MESA_SHADER_VERTEX]->info.merged_shader_compiled_separately &&
       cmd_buffer->state.shaders[MESA_SHADER_VERTEX]->info.is_ngg == device->physical_device->use_ngg &&
       cmd_buffer->state.shaders[MESA_SHADER_VERTEX]->info.wave_size == device->physical_device->ge_wave_size;