diff --git a/.gitignore b/.gitignore
index fbc4726..25d1efd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 *.o
 *.a
+main
+main.exe
 main-sb*
 main-lb*
 output.txt
-seeds.txt
\ No newline at end of file
diff --git a/makefile b/makefile
index 3db7029..0669883 100644
--- a/makefile
+++ b/makefile
@@ -72,14 +72,14 @@ all: main
 clean:
 	rm -f main libcubiomes.a biomenoise.o biomes.o finders.o generator.o layers.o noise.o cubiomes.o gpu.o cpu.o client.o server.o
 
-libcubiomes.a:
+libcubiomes.a: $(CUBIOMES_SRC)
 	$(CC) -c $(CUBIOMES_SRC) -fwrapv $(CFLAGS)
 	$(AR) rcs libcubiomes.a biomenoise.o biomes.o finders.o generator.o layers.o noise.o
 
 cubiomes.o: src/cubiomes.c src/cubiomes.h
 	$(CC) -c $< -o $@ $(CFLAGS)
 
-gpu.o: src/gpu.cu src/gpu.h src/common.h src/Random.h
+gpu.o: src/gpu.cu src/gpu.h src/common.h src/Random.h src/kernel_0A.h src/kernel_0B.h
 	nvcc -c $< -o $@ $(NVCC_FLAGS)
 
 cpu.o: src/cpu.cpp src/cpu.h src/common.h src/cubiomes.h
diff --git a/src/gpu.cu b/src/gpu.cu
index 2dd041d..7d00c6b 100644
--- a/src/gpu.cu
+++ b/src/gpu.cu
@@ -1675,7 +1675,7 @@ void GpuThread::run() {
   std::printf("Initializing device %d\n", device);
 
   TRY_CUDA(cudaSetDevice(device));
-  cudaFuncSetAttribute(KernelFilterGradVecs1::kernel, cudaFuncAttributePreferredSharedMemoryCarveout, 100);
+  TRY_CUDA(cudaFuncSetAttribute(KernelFilterGradVecs1::kernel, cudaFuncAttributePreferredSharedMemoryCarveout, 100));
   init_grad_dot_table();
   init_conv_kernels();
 
diff --git a/src/main.cpp b/src/main.cpp
index 9687241..bf6603c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -112,6 +112,7 @@ struct Args {
                 auto address = split_address(argv[i++]);
                 if (!address) {
                     std::fprintf(stderr, "invalid argument to --client\n");
+                    return false;
                 }
                 client = std::move(address);
             } else if (std::strcmp("--server", arg) == 0) {
@@ -120,6 +121,7 @@ struct Args {
                 auto address = split_address(argv[i++]);
                 if (!address) {
                     std::fprintf(stderr, "invalid argument to --server\n");
+                    return false;
                 }
                 server = std::move(address);
             } else if (std::strcmp("--output", arg) == 0) {
@@ -303,11 +305,13 @@ int main_inner(int argc, char **argv) {
     if (output_file != nullptr) {
         std::fclose(output_file);
     }
+
+    return 0;
 }
 
 int main(int argc, char **argv) {
     try {
-        main_inner(argc, argv);
+        return main_inner(argc, argv);
     } catch (std::exception &e) {
         std::fprintf(stderr, "Uncaught exception in main: %s\n", e.what());
         std::abort();