diff --git a/Documentation/ProjectFile/prj/parameters/parameter/Function/t_expression.md b/Documentation/ProjectFile/prj/parameters/parameter/Function/t_expression.md
index 34872f05917fd32e73dd89073e6cc9cbb37ea7b0..fee5201f0277819181e7b981cd40fb692704997e 100644
--- a/Documentation/ProjectFile/prj/parameters/parameter/Function/t_expression.md
+++ b/Documentation/ProjectFile/prj/parameters/parameter/Function/t_expression.md
@@ -1 +1 @@
-Mathematical expression of the function (currently x,y,z are supported variales). For non-scalar values, an expression should be given for each component.
+Mathematical expression of the function (currently x,y,z are supported variables). For non-scalar values, an expression should be given for each component.