diff --git a/build.symbian/pjsua_lib.mmp b/build.symbian/pjsua_lib.mmp
index 0b19781..ee7c6b0 100644
--- a/build.symbian/pjsua_lib.mmp
+++ b/build.symbian/pjsua_lib.mmp
@@ -27,7 +27,7 @@
 
 // Must compile as C++, otherwise exception would not work
 OPTION          CW -lang c++
-OPTION          ARMCC --cpp
+OPTION          ARMCC --cpp --gnu
 OPTION          GCC     -x c++
 OPTION          GCCE    -x c++