diff --git a/lib/version_win32.c b/lib/version_win32.c
index 79a2aa6ab4..a1eb72c9df 100644
--- a/lib/version_win32.c
+++ b/lib/version_win32.c
@@ -76,6 +76,8 @@ bool curlx_verify_windows_version(const unsigned int majorVersion,
   bool matched = FALSE;
 
 #if defined(CURL_WINDOWS_APP)
+  (void)buildVersion;
+
   /* We have no way to determine the Windows version from Windows apps,
      so let's assume we're running on the target Windows version. */
   const WORD fullVersion = MAKEWORD(minorVersion, majorVersion);