diff --git a/cmd/mount_zfs/mount_zfs.c b/cmd/mount_zfs/mount_zfs.c
index 87d2ccadcd..ed9f167cca 100644
--- a/cmd/mount_zfs/mount_zfs.c
+++ b/cmd/mount_zfs/mount_zfs.c
@@ -182,6 +182,7 @@ main(int argc, char **argv)
 	int error, c;
 
 	(void) setlocale(LC_ALL, "");
+	(void) setlocale(LC_NUMERIC, "C");
 	(void) textdomain(TEXT_DOMAIN);
 
 	opterr = 0;
diff --git a/cmd/zfs/zfs_main.c b/cmd/zfs/zfs_main.c
index 1a113c5c03..20579157d7 100644
--- a/cmd/zfs/zfs_main.c
+++ b/cmd/zfs/zfs_main.c
@@ -8468,6 +8468,7 @@ main(int argc, char **argv)
 	char **newargv;
 
 	(void) setlocale(LC_ALL, "");
+	(void) setlocale(LC_NUMERIC, "C");
 	(void) textdomain(TEXT_DOMAIN);
 
 	opterr = 0;
diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
index adbb78a8ef..cd1c66323a 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -10229,6 +10229,7 @@ main(int argc, char **argv)
 	char **newargv;
 
 	(void) setlocale(LC_ALL, "");
+	(void) setlocale(LC_NUMERIC, "C");
 	(void) textdomain(TEXT_DOMAIN);
 	srand(time(NULL));