diff --git a/lib/nbsd_libc/time/Makefile b/lib/nbsd_libc/time/Makefile
index dd154b301..689bdde33 100644
--- a/lib/nbsd_libc/time/Makefile
+++ b/lib/nbsd_libc/time/Makefile
@@ -212,7 +212,7 @@ GCC_DEBUG_FLAGS = -Dlint -g -O -fno-common \
 # before the first Monday in January when a "%V" format is used and January 1
 # falls on a Friday, Saturday, or Sunday.
 
-CFLAGS=
+CFLAGS= -DPCTS
 
 # If you want zic's -s option used when installing, uncomment the next line
 # ZFLAGS=	-s