diff --git a/litex/soc/cores/cpu/mor1kx/core.py b/litex/soc/cores/cpu/mor1kx/core.py
index 510687660..5ab61b4c6 100644
--- a/litex/soc/cores/cpu/mor1kx/core.py
+++ b/litex/soc/cores/cpu/mor1kx/core.py
@@ -47,7 +47,6 @@ class MOR1KX(CPU):
     def gcc_flags(self):
         flags =  "-mhard-mul "
         flags += "-mhard-div "
-        flags += "-mror "
         flags += "-D__mor1kx__ "
         return flags
 
@@ -55,7 +54,6 @@ class MOR1KX(CPU):
     def clang_flags(self):
         flags =  "-mhard-mul "
         flags += "-mhard-div "
-        flags += "-mror "
         flags += "-mffl1 "
         flags += "-maddc "
         flags += "-D__mor1kx__ "