diff --git a/desktop-widgets/mainwindow.ui b/desktop-widgets/mainwindow.ui
index cba3d8503..dcd1e2bd5 100644
--- a/desktop-widgets/mainwindow.ui
+++ b/desktop-widgets/mainwindow.ui
@@ -687,7 +687,7 @@
      <normaloff>:/icon_tissue</normaloff>:/icon_tissue</iconset>
    </property>
    <property name="text">
-    <string>Toggle tissue graph</string>
+    <string>Toggle tissue heat-map</string>
    </property>
   </action>
   <action name="actionUserSurvey">
diff --git a/icons/heatmap.png b/icons/heatmap.png
new file mode 100644
index 000000000..00c1e60e5
Binary files /dev/null and b/icons/heatmap.png differ
diff --git a/subsurface.qrc b/subsurface.qrc
index 930b88890..2f58782cf 100644
--- a/subsurface.qrc
+++ b/subsurface.qrc
@@ -58,7 +58,7 @@
         <file alias="icon_ceiling_dc">icons/pc.png</file>
         <file alias="icon_ead">icons/ead.png</file>
         <file alias="icon_HR">icons/icon-HR.png</file>
-        <file alias="icon_tissue">icons/tissues.png</file>
+        <file alias="icon_tissue">icons/heatmap.png</file>
         <file alias="calendar">icons/calendarbg.png</file>
         <file alias="pictures">icons/pictures.png</file>
         <file>icons/subsurface/index.theme</file>