diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 8e25a3207dd..2c44667e873 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -401,7 +401,7 @@ radv_enumerate_devices(struct radv_instance *instance)
 
 	instance->physicalDeviceCount = 0;
 
-	max_devices = drmGetDevices2(0, devices, sizeof(devices));
+	max_devices = drmGetDevices2(0, devices, ARRAY_SIZE(devices));
 	if (max_devices < 1)
 		return VK_ERROR_INCOMPATIBLE_DRIVER;