diff --git a/projects/core/src/output_device/gryphn_physical_device.c b/projects/core/src/output_device/gryphn_physical_device.c
index 830024f..a147ed0 100644
--- a/projects/core/src/output_device/gryphn_physical_device.c
+++ b/projects/core/src/output_device/gryphn_physical_device.c
@@ -6,11 +6,11 @@ gnPhysicalDeviceProperties gnQueryPhysicalDeviceProperties(gnInstanceHandle inst
     return instance->functions->getPhysicalDeviceProperties(instance, device, instance->functions->next);
 }
 
-gnPhysicalDeviceProperties gnQueryPhysicalDeviceFeatures(gnInstanceHandle instance, gnPhysicalDeviceHandle device) {
+gnPhysicalDeviceFeatures gnQueryPhysicalDeviceFeatures(gnInstanceHandle instance, gnPhysicalDeviceHandle device) {
     return instance->functions->getPhysicalDeviceFeatures(instance, device, instance->functions->next);
 }
 
-gnPhysicalDeviceProperties gnQueryPhysicalDeviceLimits(gnInstanceHandle instance, gnPhysicalDeviceHandle device) {
+gnPhysicalDeviceLimits gnQueryPhysicalDeviceLimits(gnInstanceHandle instance, gnPhysicalDeviceHandle device) {
     return instance->functions->getPhysicalDeviceLimits(instance, device, instance->functions->next);
 }
 
diff --git a/projects/core/src/output_device/gryphn_physical_device.h b/projects/core/src/output_device/gryphn_physical_device.h
index 33e6c50..c1f0c32 100644
--- a/projects/core/src/output_device/gryphn_physical_device.h
+++ b/projects/core/src/output_device/gryphn_physical_device.h
@@ -113,7 +113,7 @@ typedef struct gnPhysicalDeviceLimits {
 } gnPhysicalDeviceLimits;
 
 gnPhysicalDeviceProperties gnQueryPhysicalDeviceProperties(gnInstanceHandle instance, gnPhysicalDeviceHandle device);
-gnPhysicalDeviceProperties gnQueryPhysicalDeviceFeatures(gnInstanceHandle instance, gnPhysicalDeviceHandle device);
-gnPhysicalDeviceProperties gnQueryPhysicalDeviceLimits(gnInstanceHandle instance, gnPhysicalDeviceHandle device);
+gnPhysicalDeviceFeatures gnQueryPhysicalDeviceFeatures(gnInstanceHandle instance, gnPhysicalDeviceHandle device);
+gnPhysicalDeviceLimits gnQueryPhysicalDeviceLimits(gnInstanceHandle instance, gnPhysicalDeviceHandle device);
 
 gnBool gnPhysicalDeviceCanPresentToSurface(gnInstance instance, gnPhysicalDeviceHandle device, gnWindowSurfaceHandle windowSurface);
diff --git a/projects/loader/src/gryphn_instance_functions.h b/projects/loader/src/gryphn_instance_functions.h
index 29dfd5a..8f20594 100644
--- a/projects/loader/src/gryphn_instance_functions.h
+++ b/projects/loader/src/gryphn_instance_functions.h
@@ -10,6 +10,8 @@ typedef struct gnSurfaceDetails gnSurfaceDetails;
 typedef struct gnOutputDeviceInfo gnOutputDeviceInfo;
 typedef enum gnSuitableField gnSuitableField;
 typedef struct gnPhysicalDeviceProperties gnPhysicalDeviceProperties;
+typedef struct gnPhysicalDeviceFeatures gnPhysicalDeviceFeatures;
+typedef struct gnPhysicalDeviceLimits gnPhysicalDeviceLimits;
 
 #ifdef GN_PLATFORM_LINUX
     #ifdef GN_WINDOW_X11
@@ -27,8 +29,8 @@ typedef gnReturnCode (*PFN_gnInstanceQueryDevices)(gnInstanceHandle, uint32_t*,
 typedef void (*PFN_gnDestroyInstance)(gnInstanceHandle, gryphnInstanceFunctionLayers*, gnAllocators*);
 
 typedef gnPhysicalDeviceProperties (*PFN_gnQueryPhysicalDeviceProperties)(gnInstance, gnPhysicalDeviceHandle, gryphnInstanceFunctionLayers*);
-typedef gnPhysicalDeviceProperties (*PFN_gnQueryPhysicalDeviceFeatures)(gnInstanceHandle, gnPhysicalDeviceHandle, gryphnInstanceFunctionLayers*);
-typedef gnPhysicalDeviceProperties (*PFN_gnQueryPhysicalDeviceLimits)(gnInstanceHandle, gnPhysicalDeviceHandle, gryphnInstanceFunctionLayers*);
+typedef gnPhysicalDeviceFeatures (*PFN_gnQueryPhysicalDeviceFeatures)(gnInstanceHandle, gnPhysicalDeviceHandle, gryphnInstanceFunctionLayers*);
+typedef gnPhysicalDeviceLimits (*PFN_gnQueryPhysicalDeviceLimits)(gnInstanceHandle, gnPhysicalDeviceHandle, gryphnInstanceFunctionLayers*);
 
 typedef struct gnInstanceFunctions {
     gnBool (*_gnPhysicalDeviceCanPresentToSurface)(gnPhysicalDevice device, gnWindowSurfaceHandle windowSurface);