diff --git a/layers/vk_layer_extension_utils.cpp b/layers/vk_layer_extension_utils.cpp
index bd778e9..4c1e396 100644
--- a/layers/vk_layer_extension_utils.cpp
+++ b/layers/vk_layer_extension_utils.cpp
@@ -27,8 +27,8 @@
  * This file contains utility functions for layers
  */
 
-VkResult util_GetExtensionProperties(const uint32_t count, const VkExtensionProperties *layer_extensions, uint32_t *pCount,
-                                     VkExtensionProperties *pProperties) {
+VK_LAYER_EXPORT VkResult util_GetExtensionProperties(const uint32_t count, const VkExtensionProperties *layer_extensions,
+                                                     uint32_t *pCount, VkExtensionProperties *pProperties) {
     uint32_t copy_size;
 
     if (pProperties == NULL || layer_extensions == NULL) {
@@ -46,8 +46,8 @@
     return VK_SUCCESS;
 }
 
-VkResult util_GetLayerProperties(const uint32_t count, const VkLayerProperties *layer_properties, uint32_t *pCount,
-                                 VkLayerProperties *pProperties) {
+VK_LAYER_EXPORT VkResult util_GetLayerProperties(const uint32_t count, const VkLayerProperties *layer_properties, uint32_t *pCount,
+                                                 VkLayerProperties *pProperties) {
     uint32_t copy_size;
 
     if (pProperties == NULL || layer_properties == NULL) {
diff --git a/layers/vk_layer_extension_utils.h b/layers/vk_layer_extension_utils.h
index 0f249b7..b593768 100644
--- a/layers/vk_layer_extension_utils.h
+++ b/layers/vk_layer_extension_utils.h
@@ -30,11 +30,11 @@
  */
 extern "C" {
 
-VkResult util_GetExtensionProperties(const uint32_t count, const VkExtensionProperties *layer_extensions, uint32_t *pCount,
-                                     VkExtensionProperties *pProperties);
+VK_LAYER_EXPORT VkResult util_GetExtensionProperties(const uint32_t count, const VkExtensionProperties *layer_extensions,
+                                                     uint32_t *pCount, VkExtensionProperties *pProperties);
 
-VkResult util_GetLayerProperties(const uint32_t count, const VkLayerProperties *layer_properties, uint32_t *pCount,
-                                 VkLayerProperties *pProperties);
+VK_LAYER_EXPORT VkResult util_GetLayerProperties(const uint32_t count, const VkLayerProperties *layer_properties, uint32_t *pCount,
+                                                 VkLayerProperties *pProperties);
 
 } // extern "C"
 #endif // LAYER_EXTENSION_UTILS_H