diff --git a/configure.ac b/configure.ac
index 18e97b88e..9fcaafae6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,9 +40,6 @@ else
   CXXFLAGS_overridden=no
 fi
 
-# Zcash requries C++11 compatibility; set it early:
-CXXFLAGS="-std=c++11 $CXXFLAGS"
-
 AC_PROG_CXX
 m4_ifdef([AC_PROG_OBJCXX],[AC_PROG_OBJCXX])