diff --git a/src/mame/drivers/hh_tms1k.cpp b/src/mame/drivers/hh_tms1k.cpp
index bcf6bf2b0a0..bcd6014c6ed 100644
--- a/src/mame/drivers/hh_tms1k.cpp
+++ b/src/mame/drivers/hh_tms1k.cpp
@@ -9959,7 +9959,7 @@ ROM_END
 
   Tandy 3 in 1 Sports Arena (model 60-2178)
   * TMS1100 (just a datestamp label (8331), die label 1100B MP1231)
-  * 2x2-digit 7seg LED display + 45 other LEDs, 1-bit sound
+  * 2x2-digit 7seg LED display + 47 other LEDs, 1-bit sound
 
   For Tandy Sports Arena (model 60-2158), see cmsport, this is a different game.
   This version is very similar to ssports4 released a few years earlier.
diff --git a/src/mame/layout/t3in1sa.lay b/src/mame/layout/t3in1sa.lay
index 27975d6c6a7..b188837d81a 100644
--- a/src/mame/layout/t3in1sa.lay
+++ b/src/mame/layout/t3in1sa.lay
@@ -54,5 +54,8 @@ license:CC0
 
 		<group ref="display1"><bounds x="10" y="0" width="13" height="25" /><orientation rotate="270" /></group>
 		<group ref="display2"><bounds x="6" y="9" width="2" height="7" /><orientation rotate="270" /></group>
+
+		<element name="0.8" ref="led"><bounds x="6.8" y="18.33" width="0.33" height="0.33" /></element>
+		<element name="1.8" ref="led"><bounds x="6.8" y="6.33" width="0.33" height="0.33" /></element>
 	</view>
 </mamelayout>