diff --git a/skills/legacy-circuit-mockups/references/555.md b/skills/legacy-circuit-mockups/references/555.md
index 74c265ff..43c7fdfd 100644
--- a/skills/legacy-circuit-mockups/references/555.md
+++ b/skills/legacy-circuit-mockups/references/555.md
@@ -103,7 +103,7 @@ flowchart TB
 | Supply Voltage | vcc | - | 4.5 | - | 16 | V |
 | Supply Current (Low Stable) (Note 1) | Icc | Vcc = 5V, Rl = ∞<hr>Vcc = 15V, Rl = ∞ | -<hr>- | 3<hr>7.5 | 6<hr>15 | mA<hr>mA |
 | Timing Error (Monostable)<br>Initial Accuracy (Note2)<br>Drift with Temperature (Note4)<br>Drift with Supply Voltage (Note4)<br> | ACCUR<br>Δt/ΔT<br>Δt/ΔVcc | Ra = 1kΩ to100kΩ<br>C = 0.1μF | - | 1.0<br>50<br>0.1 | 3.0<br><br>0.5 | %<br>ppm/°C<br>%/V |
-| Timing Error (Astable)<br>Intial Accuracy (Note2)<br>Drift with Temperature (Note4)<br>Drift with Supply Voltage (Note4) | ACCUR<br>Δt/ΔT<br>Δt/ΔVcc | Ra = 1kΩ to 100kΩ<br> C = 0.1μF | - | 2.25<br>150<br>0.3 | - | %<br>ppm/°C<br>%/V |
+| Timing Error (Astable)<br>Initial Accuracy (Note2)<br>Drift with Temperature (Note4)<br>Drift with Supply Voltage (Note4) | ACCUR<br>Δt/ΔT<br>Δt/ΔVcc | Ra = 1kΩ to 100kΩ<br> C = 0.1μF | - | 2.25<br>150<br>0.3 | - | %<br>ppm/°C<br>%/V |
 | Control Voltage | Vc | Vcc = 15V<hr> Vcc = 5V | 9.0<hr>2.6 | 10.0<hr>3.33 | 11.0<hr>4.0 | V<hr>V |
 | Threshold Voltage | VTH | VCC = 15V<hr>VCC = 5V | -<hr>- | 10.0<hr>3.33 | -<hr>- | V<hr>V |
 | Threshold Current (Note3) | Ith | - | - | 0.1 | 0.25 | μA |