--- EMBOSS-6.6.0/emboss/embossversion.c
+++ EMBOSS-6.6.0/emboss/embossversion.c
@@ -415,7 +415,7 @@
 	ajFmtPrintF(outfile, "X_DISPLAY_MISSING %d\n", X_DISPLAY_MISSING);
 #endif
 #ifdef _FORTIFY_SOURCE
-	ajFmtPrintF(outfile, "_FORTIFY_SOURCE %d\n", _FORTIFY_SOURCE);
+	ajFmtPrintF(outfile, "_FORTIFY_SOURCE %d\n", __USE_FORTIFY_LEVEL);
 #endif
 	ajFmtPrintF(outfile, "\n");
 	ajFmtPrintF(outfile, "Sizes (bytes):\n");