diff --git a/configure.ac b/configure.ac
index 4021b12502..909bddb650 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,7 +69,7 @@ AS_IF([ test -n "$CFLAG_VISIBILITY" ], [
        AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY"
        ])
 
-WOLFSSL_BUILD_DATE=$(date -R)
+WOLFSSL_BUILD_DATE=$(LC_TIME=C date +"%a, %d %b %Y %T %z")
 AC_SUBST([WOLFSSL_BUILD_DATE])