diff --git a/fips/fips_premain.c b/fips/fips_premain.c
index 40efaf997..c94568c8c 100644
--- a/fips/fips_premain.c
+++ b/fips/fips_premain.c
@@ -7,7 +7,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#if defined(__unix) || defined(__unix__) || defined(__ANDROID__)
+#if defined(__unix) || defined(__unix__) || defined(__vxworks) || defined(__ANDROID__)
 #include <unistd.h>
 #endif
 
diff --git a/fips/fips_premain.c.sha1 b/fips/fips_premain.c.sha1
index e6d5c716a..a45ccbb6b 100644
--- a/fips/fips_premain.c.sha1
+++ b/fips/fips_premain.c.sha1
@@ -1 +1 @@
-HMAC-SHA1(fips_premain.c)= 5f546af6cad8753df3956d233db9a6d7cce505aa
+HMAC-SHA1(fips_premain.c)= 75dc76251204afcfcf765718f57cd09230ebd325