diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index 7836f9f3e..b404dc8e7 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -78,7 +78,7 @@ struct SynthXilinxPass : public ScriptPass
 		log("        do not use MUXF[78] resources to implement LUTs larger than LUT6s\n");
 		log("\n");
 		log("    -widemux <int>\n");
-		log("        enable inference of hard multiplexer resources (MuxFx) for muxes at or\n");
+		log("        enable inference of hard multiplexer resources (MUXF[78]) for muxes at or\n");
 		log("        above this number of inputs (minimum value 2, recommended value >= 5).\n");
 		log("        default: 0 (no inference)\n");
 		log("\n");