diff --git a/evolution.spec b/evolution.spec
index 2fc3f40..4ce45f6 100644
--- a/evolution.spec
+++ b/evolution.spec
@@ -31,7 +31,7 @@
 # Upstream tarballs often contain instances of undeclared functions; these tend
 # to work on i386 but fail on 64-bit architectures.  Leave this on to trap the
 # warnings as errors (and ideally get the flag into the upstream build):
-%define require_function_declarations 0
+%define require_function_declarations 1
 
 %define redhat_menus_version 5.0.4
 
@@ -636,6 +636,7 @@ rm -rf $RPM_BUILD_ROOT
 %changelog
 * Mon Mar 13 2006 Ray Strode <rstrode@redhat.com> - 2.6.0-1
 - 2.6.0
+- turn on the "error on missing prototypes" check thing
 
 * Mon Feb 27 2006 Ray Strode <rstrode@redhat.com> - 2.5.92-1
 - 2.5.92