diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c
index 5fe01e516817..5a242b491a9d 100644
--- a/tools/power/cpupower/utils/cpufreq-info.c
+++ b/tools/power/cpupower/utils/cpufreq-info.c
@@ -542,8 +542,6 @@ static struct option info_opts[] = {
 
 int cmd_freq_info(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1;
 	unsigned int cpu = 0;
 	unsigned int human = 0;
diff --git a/tools/power/cpupower/utils/cpufreq-set.c b/tools/power/cpupower/utils/cpufreq-set.c
index c5e60a39cfa6..06cd4b280132 100644
--- a/tools/power/cpupower/utils/cpufreq-set.c
+++ b/tools/power/cpupower/utils/cpufreq-set.c
@@ -195,8 +195,6 @@ static int do_one_cpu(unsigned int cpu, struct cpufreq_policy *new_pol,
 
 int cmd_freq_set(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1;
 	int double_parm = 0, related = 0, policychange = 0;
 	unsigned long freq = 0;
diff --git a/tools/power/cpupower/utils/cpuidle-info.c b/tools/power/cpupower/utils/cpuidle-info.c
index 81b4763a97d6..ccb37125bd37 100644
--- a/tools/power/cpupower/utils/cpuidle-info.c
+++ b/tools/power/cpupower/utils/cpuidle-info.c
@@ -139,8 +139,6 @@ static inline void cpuidle_exit(int fail)
 
 int cmd_idle_info(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1, output_param = 0, verbose = 1;
 	unsigned int cpu = 0;
 
diff --git a/tools/power/cpupower/utils/cpuidle-set.c b/tools/power/cpupower/utils/cpuidle-set.c
index a551d1d4ac51..703094f1343c 100644
--- a/tools/power/cpupower/utils/cpuidle-set.c
+++ b/tools/power/cpupower/utils/cpuidle-set.c
@@ -24,8 +24,6 @@ static struct option info_opts[] = {
 
 int cmd_idle_set(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	int ret = 0, cont = 1, param = 0, disabled;
 	unsigned long long latency = 0, state_latency;
 	unsigned int cpu = 0, idlestate = 0, idlestates = 0;
diff --git a/tools/power/cpupower/utils/cpupower-info.c b/tools/power/cpupower/utils/cpupower-info.c
index 18fd7751f509..79154d71e498 100644
--- a/tools/power/cpupower/utils/cpupower-info.c
+++ b/tools/power/cpupower/utils/cpupower-info.c
@@ -28,8 +28,6 @@ static void print_wrong_arg_exit(void)
 
 int cmd_info(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	unsigned int cpu;
 	struct utsname uts;
 
diff --git a/tools/power/cpupower/utils/cpupower-set.c b/tools/power/cpupower/utils/cpupower-set.c
index 550a942e72ce..c2176b9fa57d 100644
--- a/tools/power/cpupower/utils/cpupower-set.c
+++ b/tools/power/cpupower/utils/cpupower-set.c
@@ -33,8 +33,6 @@ static void print_wrong_arg_exit(void)
 
 int cmd_set(int argc, char **argv)
 {
-	extern char *optarg;
-	extern int optind, opterr, optopt;
 	unsigned int cpu;
 	struct utsname uts;