diff --git a/openmp/runtime/src/kmp_os.h b/openmp/runtime/src/kmp_os.h
index 2252f5e7e97a7..29a281f096855 100644
--- a/openmp/runtime/src/kmp_os.h
+++ b/openmp/runtime/src/kmp_os.h
@@ -219,7 +219,8 @@ typedef kmp_uint32 kmp_uint;
 
 // stdarg handling
 #if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64 || KMP_ARCH_WASM) &&  \
-    (KMP_OS_FREEBSD || KMP_OS_LINUX || KMP_OS_WASI)
+    (KMP_OS_FREEBSD || KMP_OS_NETBSD || KMP_OS_OPENBSD || KMP_OS_DRAGONFLY ||  \
+     KMP_OS_LINUX || KMP_OS_WASI)
 typedef va_list *kmp_va_list;
 #define kmp_va_deref(ap) (*(ap))
 #define kmp_va_addr_of(ap) (&(ap))