diff --git a/src/btop_draw.cpp b/src/btop_draw.cpp
index da06b438..9ebd40c3 100644
--- a/src/btop_draw.cpp
+++ b/src/btop_draw.cpp
@@ -612,7 +612,7 @@ namespace Cpu {
 					graphs.resize(1);
 					graph_width = graph_default_width;
 					graphs[0] = Draw::Graph{ graph_width, graph_height, "cpu", cpu.cpu_percent.at(graph_field), graph_symbol, invert, true };
-					if ((ulong)Gpu::shown < gpus.size()) {
+					if (std::cmp_less(Gpu::shown, gpus.size())) {
 						gpu_temp_graphs.resize(gpus.size());
 						gpu_mem_graphs.resize(gpus.size());
 						gpu_meters.resize(gpus.size());
diff --git a/src/linux/btop_collect.cpp b/src/linux/btop_collect.cpp
index 2e85aad8..d9ef56bd 100644
--- a/src/linux/btop_collect.cpp
+++ b/src/linux/btop_collect.cpp
@@ -253,7 +253,7 @@ namespace Shared {
 
 			using namespace Gpu;
 			gpu_b_height_offsets.resize(gpus.size());
-			for (ulong i = 0; i < gpu_b_height_offsets.size(); ++i)
+			for (size_t i = 0; i < gpu_b_height_offsets.size(); ++i)
 				gpu_b_height_offsets[i] = gpus[i].supported_functions.gpu_utilization
 					   + gpus[i].supported_functions.pwr_usage
 					   + (gpus[i].supported_functions.mem_total or gpus[i].supported_functions.mem_used)