diff --git a/common/Vulkan/Context.cpp b/common/Vulkan/Context.cpp
index 9bcdf6862a..974c8ad196 100644
--- a/common/Vulkan/Context.cpp
+++ b/common/Vulkan/Context.cpp
@@ -39,8 +39,8 @@ enum : u32
 {
 	MAX_DRAW_CALLS_PER_FRAME = 8192,
 	MAX_COMBINED_IMAGE_SAMPLER_DESCRIPTORS_PER_FRAME = 2 * MAX_DRAW_CALLS_PER_FRAME,
-	MAX_SAMPLED_IMAGE_DESCRIPTORS_PER_FRAME =
-		MAX_DRAW_CALLS_PER_FRAME, // assume at least half our draws aren't going to be shuffle/blending
+	MAX_SAMPLED_IMAGE_DESCRIPTORS_PER_FRAME = MAX_DRAW_CALLS_PER_FRAME, // assume at least half our draws aren't going to be shuffle/blending
+	MAX_STORAGE_IMAGE_DESCRIPTORS_PER_FRAME = 4, // Currently used by CAS only
 	MAX_INPUT_ATTACHMENT_IMAGE_DESCRIPTORS_PER_FRAME = MAX_DRAW_CALLS_PER_FRAME,
 	MAX_DESCRIPTOR_SETS_PER_FRAME = MAX_DRAW_CALLS_PER_FRAME * 2
 };
@@ -874,6 +874,7 @@ namespace Vulkan
 			VkDescriptorPoolSize pool_sizes[] = {
 				{VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, MAX_COMBINED_IMAGE_SAMPLER_DESCRIPTORS_PER_FRAME},
 				{VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, MAX_SAMPLED_IMAGE_DESCRIPTORS_PER_FRAME},
+				{VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, MAX_STORAGE_IMAGE_DESCRIPTORS_PER_FRAME},
 				{VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, MAX_INPUT_ATTACHMENT_IMAGE_DESCRIPTORS_PER_FRAME},
 			};