1 files changed, 2 insertions, 2 deletions
diff --git a/process.c b/process.c
index cb77275ccc..67c4d3816b 100644
--- a/process.c
+++ b/process.c
@@ -2477,10 +2477,10 @@ proc_setgroups(VALUE obj, VALUE ary)
 		groups[i] = NUM2INT(g);
 	    }
 	    else {
-		gr = getgrnam(RSTRING(g)->ptr);
+		gr = getgrnam(RSTRING(tmp)->ptr);
 		if (gr == NULL)
 		    rb_raise(rb_eArgError, 
-			     "can't find group for %s", RSTRING(g)->ptr);
+			     "can't find group for %s", RSTRING(tmp)->ptr);
 		groups[i] = gr->gr_gid;
 	    }
 	}