diff --git a/lib/src/Makefile.am b/lib/src/Makefile.am
index 7bc79aac..6b88d3f1 100644
--- a/lib/src/Makefile.am
+++ b/lib/src/Makefile.am
@@ -1,9 +1,10 @@
-INCLUDES =								\
-	$(WARN_CFLAGS)						\
-	$(LIB_CFLAGS)						\
+libsugarprivate_la_CPPFLAGS =			\
+	$(WARN_CFLAGS)				\
+	$(LIB_CFLAGS)				\
 	-I$(MOZILLA_INCLUDE_DIR)/exthandler	\
-	-I$(MOZILLA_INCLUDE_DIR)/mimetype   \
-    -I$(MOZILLA_INCLUDE_DIR)/necko
+	-I$(MOZILLA_INCLUDE_DIR)/mimetype   	\
+	-I$(MOZILLA_INCLUDE_DIR)/necko		\
+	-DSHARE_DIR=\"$(pkgdatadir)\"
 
 noinst_LTLIBRARIES = libsugarprivate.la