diff --git a/README.md b/README.md
index e5d759a..5754c17 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,7 @@ dt = 0.05
ft = 10
pros = propagator(H, cgs₁, cgs₂; rev=false, dt=dt, ft=ft)
```
-C^†_4(0)> step=0.05, finialtime=10.png)
+
```julia
#calculate ground state energy
diff --git "a/src/example/Im step=0.05, finialtime=10.png" b/src/example/ImC1Cdagger4_step=0.05_finialtime=10.png
similarity index 100%
rename from "src/example/Im step=0.05, finialtime=10.png"
rename to src/example/ImC1Cdagger4_step=0.05_finialtime=10.png