diff --git a/ChangeLog b/ChangeLog
index 1cf717a3..b01f3719 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -189,7 +189,7 @@
 6/10/06 started 7.11.14
 - ifthenelse and affine dhints revised
 - buildlut no longer outputs x cods
-- configure asks for glib >= 2.6
+- configure asks for glib >= 2.6 (we need GOption)
 - configure uses AC_TOOL_CHECK to find tool names to help cross-compiling.
 - better configure test for libexif
 - add </libexif/ prefix if required
diff --git a/TODO b/TODO
index 5d961bc3..bc634c76 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,3 @@
-- why do we need glib2.6? can we use 2.4? it would help sol10
-
 - missing libstdc++ in link? what if we configure with no openexr?
 
   added -lstdc++ to VIPS_LIBS, but will this work on solaris etc.? maybe have
diff --git a/configure.in b/configure.in
index 6bb421de..6ab50228 100644
--- a/configure.in
+++ b/configure.in
@@ -153,6 +153,7 @@ AC_CHECK_LIB(m,cbrt,[AC_DEFINE(HAVE_CBRT,1,[have cbrt() in libm.])])
 AC_CHECK_LIB(m,hypot,[AC_DEFINE(HAVE_HYPOT,1,[have hypot() in libm.])])
 
 # have to have these
+# need glib 2.6 for GOption
 PKG_CHECK_MODULES(REQUIRED, glib-2.0 >= 2.6 gmodule-2.0 >= 2.4 libxml-2.0 gobject-2.0)
 PACKAGES_USED="$PACKAGES_USED glib-2.0 gmodule-2.0 libxml-2.0 gobject-2.0"