diff --git a/src/common/tuklib_cpucores.c b/src/common/tuklib_cpucores.c
index c16e188d..cc968dd2 100644
--- a/src/common/tuklib_cpucores.c
+++ b/src/common/tuklib_cpucores.c
@@ -56,14 +56,14 @@ tuklib_cpucores(void)
 #elif defined(TUKLIB_CPUCORES_SCHED_GETAFFINITY)
 	cpu_set_t cpu_mask;
 	if (sched_getaffinity(0, sizeof(cpu_mask), &cpu_mask) == 0)
-		ret = CPU_COUNT(&cpu_mask);
+		ret = (uint32_t)CPU_COUNT(&cpu_mask);
 
 #elif defined(TUKLIB_CPUCORES_CPUSET)
 	cpuset_t set;
 	if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
 			sizeof(set), &set) == 0) {
 #	ifdef CPU_COUNT
-		ret = CPU_COUNT(&set);
+		ret = (uint32_t)CPU_COUNT(&set);
 #	else
 		for (unsigned i = 0; i < CPU_SETSIZE; ++i)
 			if (CPU_ISSET(i, &set))
@@ -77,7 +77,7 @@ tuklib_cpucores(void)
 	size_t cpus_size = sizeof(cpus);
 	if (sysctl(name, 2, &cpus, &cpus_size, NULL, 0) != -1
 			&& cpus_size == sizeof(cpus) && cpus > 0)
-		ret = cpus;
+		ret = (uint32_t)cpus;
 
 #elif defined(TUKLIB_CPUCORES_SYSCONF)
 #	ifdef _SC_NPROCESSORS_ONLN
@@ -88,12 +88,12 @@ tuklib_cpucores(void)
 	const long cpus = sysconf(_SC_NPROC_ONLN);
 #	endif
 	if (cpus > 0)
-		ret = cpus;
+		ret = (uint32_t)cpus;
 
 #elif defined(TUKLIB_CPUCORES_PSTAT_GETDYNAMIC)
 	struct pst_dynamic pst;
 	if (pstat_getdynamic(&pst, sizeof(pst), 1, 0) != -1)
-		ret = pst.psd_proc_cnt;
+		ret = (uint32_t)pst.psd_proc_cnt;
 #endif
 
 	return ret;