diff --git a/fhem/FHEM/98_SVG.pm b/fhem/FHEM/98_SVG.pm
index 6770fd999..ad5834fce 100644
--- a/fhem/FHEM/98_SVG.pm
+++ b/fhem/FHEM/98_SVG.pm
@@ -1904,7 +1904,8 @@ SVG_render($$$$$$$$$$)
         }
         $off2 += $th/4;
         #--  text   
-        my $txt = sprintf("%g", $i);
+        my $name = ($axis==1 ? "y":"y$axis")."sprintf"; # Forum #88460
+        my $txt = sprintf($conf{$name} ? $conf{$name} : "%g", $i);
         SVG_pO
           "<text x=\"$off1\" y=\"$off2\" class=\"ylabel\"$align>$txt</text>";
       }
diff --git a/fhem/www/gplot/SVG_01_Garden.gplot b/fhem/www/gplot/SVG_01_Garden.gplot
index db750ef46..1c2faf062 100644
--- a/fhem/www/gplot/SVG_01_Garden.gplot
+++ b/fhem/www/gplot/SVG_01_Garden.gplot
@@ -10,6 +10,7 @@ set y2tics
 set grid
 set ylabel "Rain (mm)"
 set y2label "Temperature"
+set ysprintf %.2f
 
 #Log.Garden 4:Garden.T\x3a:15:
 #Log.Garden 10:Garden.T\x3a:0:delta-h
diff --git a/fhem/www/gplot/SVG_02_Cellar.gplot b/fhem/www/gplot/SVG_02_Cellar.gplot
index f804ce1ed..8ca3135b1 100644
--- a/fhem/www/gplot/SVG_02_Cellar.gplot
+++ b/fhem/www/gplot/SVG_02_Cellar.gplot
@@ -10,6 +10,7 @@ set y2tics
 set grid
 set ylabel "Humidity"
 set y2label "Temperature"
+set ysprintf %.1f
 
 #Log.Cellar 4:Cellar.T\x3a:10:
 #Log.Cellar 6:Cellar.T\x3a:10: