diff --git a/SparkleLib/Makefile.am b/SparkleLib/Makefile.am
index 0cfd4086..9d0cf6a5 100755
--- a/SparkleLib/Makefile.am
+++ b/SparkleLib/Makefile.am
@@ -4,7 +4,6 @@ TARGET = library
 ASSEMBLY_INFO_SOURCE = Defines.cs
 
 SOURCES =  \
-	Defines.cs \
 	SparkleBackend.cs \
 	SparkleConfig.cs \
 	SparkleExceptions.cs \