diff --git a/builder/ModuleBuilder.cs b/builder/ModuleBuilder.cs
index 0f62e92..7edb1ab 100644
--- a/builder/ModuleBuilder.cs
+++ b/builder/ModuleBuilder.cs
@@ -119,7 +119,7 @@ public class ModuleBuilder
 		//System.Console.WriteLine("gmcs {0}", sb.ToString());
 		System.Console.WriteLine(">> Building module {0}...", module.Name);
 
-		Process buildProcess = Process.Start("gmcs", sb.ToString());
+		Process buildProcess = Process.Start("mcs", sb.ToString());
 		buildProcess.WaitForExit();
 
 		if (buildProcess.ExitCode == 0) {
@@ -137,4 +137,4 @@ public class ModuleBuilder
 }
 
 
-}
\ No newline at end of file
+}
diff --git a/configure.ac b/configure.ac
index 415cc64..a8e527c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,9 +24,9 @@ if test "x$PKG_CONFIG" = "xno"; then
 fi
 	
 # C# compiler
-AC_PATH_PROG(MCS, gmcs, no)
+AC_PATH_PROG(MCS, mcs, no)
 
-CS="gmcs C#"
+CS="mcs C#"
 if test "x$MCS" = "xno"  ; then
 	AC_MSG_ERROR([No $CS compiler found])
 fi
