diff --git a/libgimpthumb/Makefile.am b/libgimpthumb/Makefile.am
index 74df71d41f..36de1f776f 100644
--- a/libgimpthumb/Makefile.am
+++ b/libgimpthumb/Makefile.am
@@ -75,6 +75,7 @@ include $(top_srcdir)/libgimpthumb/Makefile.gi
 
 libgimpthumb_@GIMP_API_VERSION@_la_SOURCES = \
 	gimpthumb.h		\
+	gimpthumb-enums.c	\
 	$(libgimpthumb_introspectable)
 
 libgimpthumbinclude_HEADERS = \
diff --git a/libgimpthumb/Makefile.gi b/libgimpthumb/Makefile.gi
index ef144c60d0..b00e79719e 100644
--- a/libgimpthumb/Makefile.gi
+++ b/libgimpthumb/Makefile.gi
@@ -8,7 +8,6 @@ libgimpthumb_introspectable_headers =	\
 	$(top_srcdir)/libgimpthumb/gimpthumbnail.h
 
 libgimpthumb_introspectable =	\
-	$(top_builddir)/libgimpthumb/gimpthumb-enums.c	\
 	$(top_srcdir)/libgimpthumb/gimpthumb-error.c	\
 	$(top_srcdir)/libgimpthumb/gimpthumb-utils.c	\
 	$(top_srcdir)/libgimpthumb/gimpthumbnail.c	\