diff --git a/malaga-suomi.changes b/malaga-suomi.changes
index 18325cb..a019829 100644
--- a/malaga-suomi.changes
+++ b/malaga-suomi.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Jun 19 13:35:29 UTC 2017 - bwiedemann@suse.com
+
+- Override SM_BUILDDATE to make build fully reproducible
+
 -------------------------------------------------------------------
 Thu Jun  8 11:57:25 UTC 2017 - dimstar@opensuse.org
 
diff --git a/malaga-suomi.spec b/malaga-suomi.spec
index 5084a8e..48f6625 100644
--- a/malaga-suomi.spec
+++ b/malaga-suomi.spec
@@ -48,7 +48,7 @@ library.
 %build
 CFLAGS="%{optflags}" \
 CXXFLAGS="%{optflags}" \
-make %{?_smp_mflags} vvfst EXTRA_LEX=vocabulary/erikoisalat/linux-distributions.lex
+make %{?_smp_mflags} vvfst EXTRA_LEX=vocabulary/erikoisalat/linux-distributions.lex SM_BUILDDATE="$(date --date="@${SOURCE_DATE_EPOCH:-$(date +%s)}")"
 
 %install
 make vvfst-install DESTDIR=%{buildroot}%{_datadir}/voikko