vapi/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/vapi/Makefile.am b/vapi/Makefile.am
index c384ecd..413a96a 100644
--- a/vapi/Makefile.am
+++ b/vapi/Makefile.am
@@ -6,7 +6,7 @@ if HAVE_INTROSPECTION
 if HAVE_VAPIGEN
 
 dee-1.0.vapi: $(top_builddir)/src/Dee-$(DEE_MAJOR_VERSION).$(DEE_MINOR_VERSION).gir $(srcdir)/Dee-1.0-custom.vala $(srcdir)/Dee-1.0.metadata
-	$(AM_V_GEN)$(VALA_API_GEN) --library dee-1.0 --metadatadir=$(srcdir) $(filter %.gir %.vala,$^)
+	$(AM_V_GEN)$(VALA_API_GEN) --library dee-1.0 --metadatadir=$(srcdir) $(filter %.gir %.vala,$^) --pkg gtk+-3.0
 	@touch $@
 
 endif