diff --git a/Makefile b/Makefile
index c9c56ec..75654f7 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ CFLAGS += \
     -mtune=generic \
     -O \
     '-DVERSION="$(VERSION)"' \
-    '-DBUILD_DATE="$(shell date '+%Y%m%d')"'
+    '-DBUILD_DATE="19700101"'
 
 ENTITLEMENT_FLAGS =