diff --git a/gdk/Makefile.am b/gdk/Makefile.am
index 6dc4516cdf..38a39ec381 100644
--- a/gdk/Makefile.am
+++ b/gdk/Makefile.am
@@ -23,7 +23,6 @@ EXTRA_DIST += 			\
 	gen-keyname-table.pl	\
 	gdkconfig.h.win32	\
 	gdkkeysyms-update.pl	\
-	gdk.def			\
 	gdkmarshalers.list	\
 	gdkwindowimpl.h		\
 	makefile.msc		\
@@ -298,11 +297,6 @@ install-ms-lib:
 uninstall-ms-lib:
 endif
 
-# This places the generated .def file in srcdir, since it is expected to be there.
-# (The one from a tarball is)
-gdk.def: gdk.symbols
-	$(AM_V_GEN) (echo -e EXPORTS; $(CPP) -P -DGDK_WINDOWING_WIN32 - <$(srcdir)/gdk.symbols | sed -e '/^$$/d' -e 's/^/	/' -e 's/G_GNUC_[^ ]*//g') > $(srcdir)/gdk.def
-
 lib_LTLIBRARIES = libgdk-3.la
 
 MAINTAINERCLEANFILES = $(gdk_built_sources) stamp-gdkenumtypes.h
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 87c920f981..2f1acf37c5 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -95,11 +95,6 @@ install-ms-lib:
 uninstall-ms-lib:
 endif
 
-# This places the generated .def file in srcdir, since it is expected to be there.
-# (The one from a tarball is)
-gtk.def: gtk.symbols
-	$(AM_V_GEN) (echo -e EXPORTS; $(CPP) -P -DG_OS_WIN32 - <$(srcdir)/gtk.symbols | $(SED) -e '/^$$/d' -e 's/^/	/') > $(srcdir)/gtk.def
-
 libgtkincludedir = $(includedir)/gtk-3.0/gtk
 libadd = \
 	$(top_builddir)/gdk/libgdk-3.la	\
@@ -1737,7 +1732,6 @@ EXTRA_DIST +=                   \
 	$(COMPOSITE_TEMPLATES)	\
 	$(DND_CURSORS)		\
 	$(GENERATED_ICONS)	\
-	gtk.def			\
 	gtk-win32.rc		\
 	gtk-win32.rc.in		\
 	gtkwin32embed.h		\