diff --git a/lib/csharp/Makefile.am b/lib/csharp/Makefile.am
index 2e2d7fe..611405d 100644
--- a/lib/csharp/Makefile.am
+++ b/lib/csharp/Makefile.am
@@ -69,7 +69,11 @@
             src/TException.cs \
             src/TApplicationException.cs
 
+if MONO_MCS
+CSC=mcs
+else
 CSC=gmcs
+endif
 
 if NET_2_0
 MONO_DEFINES=/d:NET_2_0