diff -r 4703cc10b99a -r 32ed1ea4d0b6 thermometers/main.c
--- a/thermometers/main.c	Tue May 06 13:24:25 2014 +0200
+++ b/thermometers/main.c	Tue May 06 21:37:06 2014 +0200
@@ -185,6 +185,10 @@
     }
 
 #ifdef HAVE_WIRINGPI_H
+
+    if (wiringPiSetup () )
+	return 1;
+
     if ((rc = initLCD (16, 2))) {
 	fprintf(stderr, "Cannot initialize LCD display, rc=%d\n", rc);
 	return 1;