diff --git a/lit.bib b/lit.bib
index 0580008cdc0529c8228af56f54e20fcbc60eda5d..610479540bac88e7135f22da26f12a1a2f494579 100644
--- a/lit.bib
+++ b/lit.bib
@@ -1,4 +1,4 @@
-ř@book{10.5555/248932,
+@book{10.5555/248932,
 author = {Bird, Richard and de Moor, Oege},
 title = {Algebra of programming},
 year = {1997},