diff --git a/gtk3.spec b/gtk3.spec
index 752bfa2..298b2d8 100644
--- a/gtk3.spec
+++ b/gtk3.spec
@@ -178,7 +178,7 @@ if [ $1 -gt 0 ]; then
 fi
 glib-compile-schemas %{_datadir}/glib-2.0/schemas &> /dev/null || :
 
-%post devel
+%postun devel
 glib-compile-schemas %{_datadir}/glib-2.0/schemas &> /dev/null || :
 
 %postun immodules