diff --git a/ef/ef0.cpp b/ef/ef0.cpp
index 8a9139913..12ab952e5 100755
--- a/ef/ef0.cpp
+++ b/ef/ef0.cpp
@@ -5,7 +5,6 @@
 int main(int argc, char** argv)
 {                                             
   const char op = argc < 2 ? '0' : argv[1][1];
-  op + 1; op + 1; op + 1; op + 1;
   switch (op)
   {
     case '1':