--- rxvt-unicode/src/logging.C	2008/05/05 16:51:52	1.46
+++ rxvt-unicode/src/logging.C	2009/05/03 21:48:53	1.47
@@ -42,6 +42,7 @@
 #if UTMP_SUPPORT
 
 #include <cstdio>
+#include <cstring>
 
 #include <sys/types.h>
 #include <sys/stat.h>