diff --git a/textproc/scdoc/Makefile b/textproc/scdoc/Makefile
index f64d0d045346..cf49a92ccb64 100644
--- a/textproc/scdoc/Makefile
+++ b/textproc/scdoc/Makefile
@@ -23,7 +23,8 @@ PLIST_FILES=	bin/${PORTNAME} \
 		man/man5/${PORTNAME}.5.gz
 
 post-patch:
-	@${REINPLACE_CMD} -i '' 's,--date=,-f "%F %T %z" ,' \
+	@${REINPLACE_CMD} -i '' -e 's,--date=,-f "%F %T" ,' \
+		-e '/SOURCE_DATE/s/date/TZ=UTC+5 &/' \
 		${WRKSRC}/test/preamble
 
 post-install: