diff --git a/lib/curl_setup.h b/lib/curl_setup.h
index 1840aeff04..dde3f89e28 100644
--- a/lib/curl_setup.h
+++ b/lib/curl_setup.h
@@ -1139,8 +1139,10 @@ typedef unsigned int curl_bit;
 
 #if EAGAIN != SOCKEWOULDBLOCK
 #define SOCK_EAGAIN_EWOULDBLOCK(e) ((e) == EAGAIN || (e) == SOCKEWOULDBLOCK)
+#define RAW_EAGAIN_EWOULDBLOCK(e)  ((e) == EAGAIN || (e) == EWOULDBLOCK)
 #else
 #define SOCK_EAGAIN_EWOULDBLOCK(e) ((e) == EAGAIN)
+#define RAW_EAGAIN_EWOULDBLOCK(e)  ((e) == EAGAIN)
 #endif
 
 /*
diff --git a/lib/vtls/rustls.c b/lib/vtls/rustls.c
index 8d0285a74b..f56ea07825 100644
--- a/lib/vtls/rustls.c
+++ b/lib/vtls/rustls.c
@@ -160,11 +160,7 @@ static ssize_t tls_recv_more(struct Curl_cfilter *cf,
   io_ctx.data = data;
   io_error = rustls_connection_read_tls(backend->conn, read_cb, &io_ctx,
                                         &tls_bytes_read);
-  if(io_error == EWOULDBLOCK
-#if EAGAIN != EWOULDBLOCK
-     || io_error == EAGAIN
-#endif
-    ) {
+  if(RAW_EAGAIN_EWOULDBLOCK(io_error)) {
     *err = CURLE_AGAIN;
     return -1;
   }
@@ -274,11 +270,7 @@ static CURLcode cr_flush_out(struct Curl_cfilter *cf, struct Curl_easy *data,
   while(rustls_connection_wants_write(rconn)) {
     io_error = rustls_connection_write_tls(rconn, write_cb, &io_ctx,
                                            &tlswritten);
-    if(io_error == EWOULDBLOCK
-#if EAGAIN != EWOULDBLOCK
-       || io_error == EAGAIN
-#endif
-      ) {
+    if(RAW_EAGAIN_EWOULDBLOCK(io_error)) {
       CURL_TRC_CF(data, cf, "cf_send: EAGAIN after %zu bytes",
                   tlswritten_total);
       return CURLE_AGAIN;