diff --git a/src/libutil/types.hh b/src/libutil/types.hh
index 7634ccd16..ff313f88d 100644
--- a/src/libutil/types.hh
+++ b/src/libutil/types.hh
@@ -49,6 +49,7 @@ public:
 
 
 typedef list<string> Strings;
+typedef list<Strings> StringsList;
 typedef set<string> StringSet;
 typedef set<StringSet> SetStringSet;
 
diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index e61e1011c..917f57c48 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -773,7 +773,7 @@ void killUser(uid_t uid)
 string runProgram(Path program, bool searchPath, const Strings & args)
 {
     /* Split args based on | for pipe-ing  */
-    
+    StringsList l;
     
     /* Create a pipe. */
     Pipe pipe;