diff --git a/src/3rdparty/libethash/ethash_internal.c b/src/3rdparty/libethash/ethash_internal.c
index 6f9aac47c..586a77fc7 100644
--- a/src/3rdparty/libethash/ethash_internal.c
+++ b/src/3rdparty/libethash/ethash_internal.c
@@ -187,7 +187,7 @@ void ethash_calculate_dag_item4_opt(
 	ethash_light_t const light
 )
 {
-	node const* cache_nodes = (node const*)light->cache;
+    node const* cache_nodes = (node const*)light->cache;
 
 	for (size_t i = 0; i < 4; ++i) {
 		node const* init = &cache_nodes[fast_mod(node_index + i, light->num_parent_nodes, light->reciprocal, light->increment, light->shift)];
@@ -197,7 +197,7 @@ void ethash_calculate_dag_item4_opt(
 	}
 
 	for (uint32_t i = 0; i != num_parents; ++i) {
-		node* parent[4];
+		node const* parent[4];
 
 		for (uint32_t j = 0; j < 4; ++j) {
 			const uint32_t parent_index = fast_mod(fnv_hash((node_index + j) ^ i, ret[j].words[i % NODE_WORDS]), light->num_parent_nodes, light->reciprocal, light->increment, light->shift);
diff --git a/src/backend/opencl/wrappers/AdlLib_linux.cpp b/src/backend/opencl/wrappers/AdlLib_linux.cpp
index 7dbb1ea2a..b297ec719 100644
--- a/src/backend/opencl/wrappers/AdlLib_linux.cpp
+++ b/src/backend/opencl/wrappers/AdlLib_linux.cpp
@@ -1,6 +1,7 @@
 /* XMRig
  * Copyright 2008-2018 Advanced Micro Devices, Inc.
  * Copyright 2018-2020 SChernykh                    <https://github.com/SChernykh>
+ * Copyright 2020      Patrick Bollinger            <https://github.com/pjbollinger>
  * Copyright 2016-2020 XMRig                        <https://github.com/xmrig>, <support@xmrig.com>
  *
  *   This program is free software: you can redistribute it and/or modify
@@ -82,7 +83,7 @@ static inline std::string sysfs_prefix(const PciTopology &topology)
 
     for (uint32_t i = 1; i < 10; ++i) {
         const std::string prefix = path + std::to_string(i) + "/";
-        if (sysfs_is_amdgpu(prefix + "name") && sysfs_read(prefix + "freq1_input")) {
+        if (sysfs_is_amdgpu(prefix + "name") && (sysfs_read(prefix + "temp1_input") || sysfs_read(prefix + "power1_average"))) {
             return prefix;
         }
     }
@@ -116,6 +117,7 @@ void xmrig::AdlLib::close()
 }
 
 
+// https://dri.freedesktop.org/docs/drm/gpu/amdgpu.html#gpu-power-thermal-controls-and-monitoring
 AdlHealth xmrig::AdlLib::health(const OclDevice &device)
 {
     if (!isReady() || device.vendorId() != OCL_VENDOR_AMD) {
@@ -134,6 +136,10 @@ AdlHealth xmrig::AdlLib::health(const OclDevice &device)
     health.rpm          = sysfs_read(prefix + "fan1_input");
     health.temperature  = sysfs_read(prefix + "temp2_input") / 1000;
 
+    if (!health.temperature) {
+        health.temperature = sysfs_read(prefix + "temp1_input") / 1000;
+    }
+
     return health;
 }