diff --git a/sys-cluster/TCL/TCL-1.0.ebuild b/sys-cluster/TCL/TCL-1.0.ebuild
index ca53febd9f..9da088e2aa 100644
--- a/sys-cluster/TCL/TCL-1.0.ebuild
+++ b/sys-cluster/TCL/TCL-1.0.ebuild
@@ -18,7 +18,7 @@ IUSE_TCL="
 	tcl-instrumentation-debug
 	+tcl-performance
 "
-USE_EXPAND="TCL"
+IUSE_EXPAND="TCL"
 IUSE="${IUSE_TCL} fti scr veloc"
 
 RDEPEND="