diff --git a/sys-cluster/otf2/otf2-2.3-r1.ebuild b/sys-cluster/otf2/otf2-2.3-r1.ebuild
index 35a693294e..bfe7036fa0 100644
--- a/sys-cluster/otf2/otf2-2.3-r1.ebuild
+++ b/sys-cluster/otf2/otf2-2.3-r1.ebuild
@@ -38,12 +38,12 @@ src_configure() {
 		$(use_enable debug)
 	)
 
-        if use sionlib; then
-                myconf+=( "--with-sionlib=${EPREFIX}/usr" )
-                myconf+=( "--with-sionlib-headers=${EPREFIX}/usr/include/sionlibl" )
+	if use sionlib; then
+		myconf+=( "--with-sionlib=${EPREFIX}/usr" )
+		myconf+=( "--with-sionlib-headers=${EPREFIX}/usr/include/sionlibl" )
 	else
-                myconf+=( "--without-sionlib" )
-        fi
+		myconf+=( "--without-sionlib" )
+	fi
 
 	econf "${myconf[@]}"
 }