diff --git a/SConstruct b/SConstruct
index f76bf05..3ca14c6 100644
--- a/SConstruct
+++ b/SConstruct
@@ -94,6 +94,8 @@ if conf.CheckCHeader('unistd.h'):
     conf.env.Append(CPPFLAGS = '-DHAVE_UNISTD_H')
 if conf.CheckCHeader('limits.h'):
     conf.env.Append(CPPFLAGS = '-DHAVE_LIMITS_H')    
+if conf.CheckCHeader('strings.h'):
+    conf.env.Append(CPPFLAGS = '-DHAVE_STRINGS_H')    
 env.Append(CPPFLAGS = '-DSIZEOF_CHAR='+conf.sizeOf("char"))
 env.Append(CPPFLAGS = '-DSIZEOF_LONG='+conf.sizeOf("long"))
 env.Append(CPPFLAGS = '-DSIZEOF_SHORT='+conf.sizeOf("short"))