diff --git a/include/vulkan/vulkan.h b/include/vulkan/vulkan.h
index 36459b1..82ecae6 100644
--- a/include/vulkan/vulkan.h
+++ b/include/vulkan/vulkan.h
@@ -1209,9 +1209,9 @@
 } VkFormatProperties;
 
 typedef struct VkExtent3D {
-    int32_t                                     width;
-    int32_t                                     height;
-    int32_t                                     depth;
+    uint32_t                                    width;
+    uint32_t                                    height;
+    uint32_t                                    depth;
 } VkExtent3D;
 
 typedef struct VkImageFormatProperties {
@@ -1710,8 +1710,8 @@
 } VkOffset2D;
 
 typedef struct VkExtent2D {
-    int32_t                                     width;
-    int32_t                                     height;
+    uint32_t                                    width;
+    uint32_t                                    height;
 } VkExtent2D;
 
 typedef struct VkRect2D {