--- a/GNUmakefile
+++ b/GNUmakefile
@@ -61,6 +61,6 @@ OBJS = $(SRCS:.c=.o)
 all: $(program)
 
 %.o: %.c $(HEADERS) prefix
-	$(CC) $(CFLAGS) $(DEFINES) -DPRIoff="\"$(OFFPRFX)d\"" -DVERSION="\"$(version)\"" -c $<
+	$(CC) $(CFLAGS) $(DEFINES) -DPRIoff="PRId64 \"d\"" -DVERSION="\"$(version)\"" -c $<
 
 include rules.mk
--- a/init.c
+++ b/init.c
@@ -25,6 +25,7 @@ Foundation, Inc., 51 Franklin Street, Fi
 #include <sys/stat.h>     /* the stat structure */
 #include <unistd.h>       /* getopt(), getcwd(), sysconf() */
 #include <string.h>       /* strcmp(), strlen(), strncpy() */
+#include <inttypes.h>
 #ifdef USE_LONG_OPTIONS
 #include <getopt.h>       /* getopt_long() */
 #endif