diff --git a/Lib/Makefile.am b/Lib/Makefile.am
index feb94ee0..841363a3 100644
--- a/Lib/Makefile.am
+++ b/Lib/Makefile.am
@@ -4,4 +4,4 @@ else
 AUDIO_DIRS = 
 endif
 
-SUBDIRS = $(AUDIO_DIRS) Bucket Debug DEM Math PUI XGL zlib
+SUBDIRS = $(AUDIO_DIRS) Bucket Debug DEM gpc Math PUI XGL zlib