diff --git a/build/Makefile.am b/build/Makefile.am
index 18adc923a8..b6b8e094c0 100644
--- a/build/Makefile.am
+++ b/build/Makefile.am
@@ -1,2 +1,4 @@
+include $(top_srcdir)/Makefile.decl
+
 SUBDIRS = \
 	win32
diff --git a/build/win32/Makefile.am b/build/win32/Makefile.am
index 1b0e25918f..14e08c059e 100644
--- a/build/win32/Makefile.am
+++ b/build/win32/Makefile.am
@@ -1,2 +1,4 @@
+include $(top_srcdir)/Makefile.decl
+
 SUBDIRS = \
 	vs9
diff --git a/build/win32/vs9/Makefile.am b/build/win32/vs9/Makefile.am
index 7973547ff7..2a42a88edf 100644
--- a/build/win32/vs9/Makefile.am
+++ b/build/win32/vs9/Makefile.am
@@ -1,3 +1,5 @@
+include $(top_srcdir)/Makefile.decl
+
 EXTRA_DIST = \
 	README.txt \
 	gtk+.sln \