diff --git a/vxworks-6.9/target/src/openssl/OPENSSL/openssl-3.1.7/include/openssl/crypto.h.in b/vxworks-6.9/target/src/openssl/OPENSSL/openssl-3.1.7/include/openssl/crypto.h.in
index 65db1a21..2e87c785 100644
--- a/vxworks-6.9/target/src/openssl/OPENSSL/openssl-3.1.7/include/openssl/crypto.h.in
+++ b/vxworks-6.9/target/src/openssl/OPENSSL/openssl-3.1.7/include/openssl/crypto.h.in
@@ -56,7 +56,10 @@ use OpenSSL::stackhash qw(generate_stack_macros);
 # if defined(OPENSSL_SYS_VXWORKS) && defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG)
    #include <taskLib.h>
    /* threads.h cannot be included from C++ files, so define these types */
-   typedef int            once_flag;
+   typedef struct {
+    BOOL done;
+    SEM_ID sem;
+	} once_flag;
    typedef unsigned int   tss_t;
 #  ifndef __cplusplus
 #  endif