diff --git a/configure.ac b/configure.ac
index ae9ff0c0..bc0c8c9e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,9 +12,6 @@ AC_INIT([flatpak-builder],
         [flatpak-builder],
         [http://flatpak.org/])
 
-AC_DEFINE([GLIB_VERSION_MIN_REQUIRED], [GLIB_VERSION_2_66], [Glib min version])
-AC_DEFINE([GLIB_VERSION_MAX_ALLOWED], [GLIB_VERSION_2_70], [Glib max version])
-
 GLIB_REQS=2.66
 OSTREE_REQS=2017.14
 FLATPAK_REQS=0.99.1
diff --git a/src/Makefile.am.inc b/src/Makefile.am.inc
index cc426df8..778fda34 100644
--- a/src/Makefile.am.inc
+++ b/src/Makefile.am.inc
@@ -53,4 +53,6 @@ flatpak_builder_SOURCES = \
 	$(NULL)
 
 flatpak_builder_LDADD = $(AM_LDADD) $(BASE_LIBS) $(LIBELF_LIBS) $(YAML_LIBS) libglnx.la
-flatpak_builder_CFLAGS = $(AM_CFLAGS) $(BASE_CFLAGS) $(YAML_CFLAGS)
+flatpak_builder_CFLAGS = $(AM_CFLAGS) $(BASE_CFLAGS) $(YAML_CFLAGS) \
+	-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_66 \
+	-DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_70