diff --git a/libco.c b/libco.c
index 6f446971..b0f018e9 100644
--- a/libco.c
+++ b/libco.c
@@ -1,5 +1,9 @@
 #if defined(__clang__)
   #pragma clang diagnostic ignored "-Wparentheses"
+
+  //placing code in section(text) does not mark it executable with Clang.
+  #undef  LIBCO_MPROTECT
+  #define LIBCO_MPROTECT
 #endif
 
 #if defined(__clang__) || defined(__GNUC__)