diff --git a/doc/filters.texi b/doc/filters.texi
index 119d1be69d8fb96028f321d7a02ec1e689af9156..4c1ef0f48598ee68c1b990e456505ee0f102bfda 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -8606,7 +8606,7 @@ It accepts the following parameters:
 @item filter_name
 The name of the frei0r effect to load. If the environment variable
 @env{FREI0R_PATH} is defined, the frei0r effect is searched for in each of the
-directories specified by the colon-separated list in @env{FREIOR_PATH}.
+directories specified by the colon-separated list in @env{FREI0R_PATH}.
 Otherwise, the standard frei0r paths are searched, in this order:
 @file{HOME/.frei0r-1/lib/}, @file{/usr/local/lib/frei0r-1/},
 @file{/usr/lib/frei0r-1/}.