diff --git a/docs/AUTHORS.txt b/docs/AUTHORS.txt
index 194e5db1a..26d8c72ca 100644
--- a/docs/AUTHORS.txt
+++ b/docs/AUTHORS.txt
@@ -258,6 +258,11 @@ June 17, 2002 - October 7, 2024
   "Concentric Circle" & "Concentric Square" magic tools
   by Bill Kendrick <bill@newbreedsoftware.com>
 
+  "Concentric Square" sound effected based on "Brush_Baião12.wav"
+  <https://freesound.org/people/justinrobert/sounds/74371/>
+  Creative Commons CC0 1.0 Universal by Justin Robert
+  <https://freesound.org/people/justinrobert/>
+
   Bloom magic tool
   by Bill Kendrick <bill@newbreedsoftware.com>
 
diff --git a/docs/CHANGES.txt b/docs/CHANGES.txt
index fa21aa1c8..b314370f7 100644
--- a/docs/CHANGES.txt
+++ b/docs/CHANGES.txt
@@ -87,7 +87,11 @@ https://tuxpaint.org/
 
     * WIP "Concentric Circle" and "Concentric Square": Draw concentric shapes.
       + Code by Bill Kendrick <bill@newbreedsoftware.com>
-      + TODO Sound effects
+      + "Concentric Square" sound effected based on "Brush_Baião12.wav"
+        <https://freesound.org/people/justinrobert/sounds/74371/>
+        Creative Commons CC0 1.0 Universal by Justin Robert
+        <https://freesound.org/people/justinrobert/>
+      + TODO Sound "Concentric Circle" effects
 
   * Magic Tool Improvements:
     ------------------------
diff --git a/magic/sounds/concentric-square.ogg b/magic/sounds/concentric-square.ogg
new file mode 100644
index 000000000..570a0316a
Binary files /dev/null and b/magic/sounds/concentric-square.ogg differ
diff --git a/magic/src/spiral.c b/magic/src/spiral.c
index f0553d99d..e599db28d 100644
--- a/magic/src/spiral.c
+++ b/magic/src/spiral.c
@@ -59,7 +59,7 @@ const char * spiral_sounds[NUM_TOOLS] = {
   "spiral-circle.ogg",
   "spiral-square.ogg",
   "spiral-circle.ogg", // FIXME
-  "spiral-square.ogg", // FIXME
+  "concentric-square.ogg",
 };
 
 const char * spiral_icons[NUM_TOOLS] = {