diff --git a/lib/csharp/Makefile.am b/lib/csharp/Makefile.am
index 909bc53..c06f50c 100644
--- a/lib/csharp/Makefile.am
+++ b/lib/csharp/Makefile.am
@@ -28,7 +28,7 @@
 
 CSC=gmcs -langversion:linq
 
-all: Thrift.dll
+all-local: Thrift.dll
 
 Thrift.dll: $(THRIFTCODE)
 	$(CSC) $(THRIFTCODE) /out:Thrift.dll /target:library