diff --git a/readme.md b/readme.md
index 6421ff7..ed99204 100644
--- a/readme.md
+++ b/readme.md
@@ -902,7 +902,7 @@ Can draw three styles: solid, open frame and open frame with screw bosses.
 | ---:|:--- |:---|
 |   1 | ```fan(fan120x25)``` |  Fan 120mm x 25mm |
 |   1 | ```fan(fan17x8)``` |  Fan 17mm x 8mm |
-|   1 | ```fan(fan25x10)``` |  Fan 25mm x 10mm |
+|   1 | ```fan(fan25.4x10)``` |  Fan 25.4mm x 10mm |
 |   1 | ```fan(fan30x10)``` |  Fan 30mm x 10mm |
 |   1 | ```fan(fan40x11)``` |  Fan 40mm x 11mm |
 |   1 | ```fan(fan50x15)``` |  Fan 50mm x 15mm |
@@ -4448,7 +4448,7 @@ The ring spacing as well as the number of spokes can be specified, if zero a gas
 | ---:|:--- |
 |   1 | fan_guard_120.stl |
 |   1 | fan_guard_17.stl |
-|   1 | fan_guard_25.stl |
+|   1 | fan_guard_25.4.stl |
 |   1 | fan_guard_30.stl |
 |   1 | fan_guard_40.stl |
 |   1 | fan_guard_50.stl |
diff --git a/tests/png/fans.png b/tests/png/fans.png
index f684b66..210ed20 100644
Binary files a/tests/png/fans.png and b/tests/png/fans.png differ
diff --git a/vitamins/fans.scad b/vitamins/fans.scad
index da8ccae..ce4769a 100644
--- a/vitamins/fans.scad
+++ b/vitamins/fans.scad
@@ -17,28 +17,28 @@
 // If not, see <https://www.gnu.org/licenses/>.
 //
 
-//          w   d   b   h      s              h     t    o   b  b    a
-//          i   e   o   o      c              u     h    u   l  o    p
-//          d   p   r   l      r              b     i    t   a  s    p
-//          t   t   e   e      e                    c    e   d  s    e
-//          h   h              w              d     k    r   e       r
-//                      p                     i     n        s  d    t
-//                      i                     a     e    d           u
-//                      t                           s    i           r
-//                      c                           s    a           e
-//                      h
+//          w     d   b   h      s              h     t    o   b  b    a
+//          i     e   o   o      c              u     h    u   l  o    p
+//          d     p   r   l      r              b     i    t   a  s    p
+//          t     t   e   e      e                    c    e   d  s    e
+//          h     h              w              d     k    r   e       r
+//                        p                     i     n        s  d    t
+//                        i                     a     e    d           u
+//                        t                           s    i           r
+//                        c                           s    a           e
+//                        h
 //
-fan120x25= [120,25, 116,52.5,  M4_dome_screw, 41,   4,  140, 9, 0,   137];
-fan80x38 = [80, 38, 75, 35.75, M4_dome_screw, 40,   4.3, 84, 7, 0,   85];
-fan80x25 = [80, 25, 75, 35.75, M4_dome_screw, 40,   4.3, 84, 7, 0,   85];
-fan70x15 = [70, 15, 66, 30.75, M4_dome_screw, 29,   3.8, 70 ,7, 0,   undef];
-fan60x25 = [60, 25, 57, 25,    M4_dome_screw, 31.5, 3.6, 64, 7, 0,   63];
-fan60x15 = [60, 15, 57, 25,    M4_dome_screw, 29,   2.4, 60, 7, 7.7, 63];
-fan50x15 = [50, 15, 48, 20,    M4_dome_screw, 25,   12.5,100,7, 0,   undef];
-fan40x11 = [40, 11, 37, 16,    M3_dome_screw, 25,   7.5,100, 9, 0,   undef];
-fan30x10 = [30, 10, 27, 12,    M3_dome_screw, 17,   10, 100, 5, 0,   undef];
-fan25x10 = [25, 10, 24, 10,   M2p5_pan_screw, 16,   10, 100, 5, 0,   undef];
-fan17x8  = [17,  8, 16, 6.75,  M2_cap_screw,  12.6,  8, 100, 7, 0,   undef];
+fan120x25= [120, 25, 116,52.5,  M4_dome_screw, 41,   4,  140, 9, 0,   137];
+fan80x38 = [80,  38, 75, 35.75, M4_dome_screw, 40,   4.3, 84, 7, 0,   85];
+fan80x25 = [80,  25, 75, 35.75, M4_dome_screw, 40,   4.3, 84, 7, 0,   85];
+fan70x15 = [70,  15, 66, 30.75, M4_dome_screw, 29,   3.8, 70 ,7, 0,   undef];
+fan60x25 = [60,  25, 57, 25,    M4_dome_screw, 31.5, 3.6, 64, 7, 0,   63];
+fan60x15 = [60,  15, 57, 25,    M4_dome_screw, 29,   2.4, 60, 7, 7.7, 63];
+fan50x15 = [50,  15, 48, 20,    M4_dome_screw, 25,  12.5,100, 7, 0,   undef];
+fan40x11 = [40,  11, 37, 16,    M3_dome_screw, 25,   7.5,100, 9, 0,   undef];
+fan30x10 = [30,  10, 27, 12,    M3_dome_screw, 17,   10, 100, 5, 0,   undef];
+fan25x10 = [25.4,10, 24, 10,   M2p5_pan_screw, 16,   10, 100, 5, 0,   undef];
+fan17x8  = [17,   8, 16, 6.75,  M2_cap_screw,  12.6,  8, 100, 7, 0,   undef];
 
 fans = [fan17x8, fan25x10, fan30x10, fan40x11, fan50x15, fan60x15, fan60x25, fan70x15, fan80x25, fan80x38, fan120x25];