diff --git a/src/libs/utils/environmentdialog.cpp b/src/libs/utils/environmentdialog.cpp
index 88311854ecf..123a571646b 100644
--- a/src/libs/utils/environmentdialog.cpp
+++ b/src/libs/utils/environmentdialog.cpp
@@ -48,7 +48,7 @@ Utils::optional<EnvironmentItems> EnvironmentDialog::getEnvironmentItems(
            "To set or change a variable, use VARIABLE=VALUE.\n"
            "Existing variables can be referenced in a VALUE with ${OTHER}.\n"
            "To clear a variable, put its name on a line with nothing else on it.\n"
-           "To disable a variable, prefix the line with \"#\""));
+           "To disable a variable, prefix the line with \"#\"."));
 }
 
 } // namespace Utils