diff --git a/ivlpp/lexor.lex b/ivlpp/lexor.lex
index dc1c7ebee..301602298 100644
--- a/ivlpp/lexor.lex
+++ b/ivlpp/lexor.lex
@@ -1362,7 +1362,7 @@ static void do_expand(int use_args)
         }
 
         isp->next = istack;
-        isp->path = strdup(istack->path);
+        isp->path = istack->path;
         isp->lineno = istack->lineno;
         istack->yybs = YY_CURRENT_BUFFER;
         istack = isp;