diff --git a/src/tools/sun.jam b/src/tools/sun.jam
index 05426cb93..9ec4f6e4e 100644
--- a/src/tools/sun.jam
+++ b/src/tools/sun.jam
@@ -48,7 +48,7 @@ generators.register-c-compiler sun.compile.c++ : CPP : OBJ : <toolset>sun ;
 # Declare flags and actions for compilation
 flags sun.compile OPTIONS <debug-symbols>on : -g ;
 flags sun.compile OPTIONS <profiling>on : -xprofile=tcov ;
-flags sun.compile OPTIONS <optimization>speed : -fast -xarch=generic ;
+flags sun.compile OPTIONS <optimization>speed : -fast ;
 flags sun.compile OPTIONS <optimization>space : -xO2 -xspace ;
 flags sun.compile OPTIONS <threading>multi : -mt ;