diff --git a/mathemagics/formulae b/mathemagics/formulae
index d15600e..4e0b493 100644
--- a/mathemagics/formulae
+++ b/mathemagics/formulae
@@ -1,4 +1,4 @@
-QString formName = i18n("Compound Interest");
+TQString formName = i18n("Compound Interest");
 defaultFormulae.append(formName);
 formulas[formName] = "4 reqargs 3 rolld dup 3 rolld / 1 + 3 rolld * ^ *";
 help[formName] = i18n("Arguments: Principal, interest rate (like .04 for 4%), compoundings per year, and number of years");