diff --git a/process_steps/process_hightech/tikz_process_steps/silicification.a.tex b/process_steps/process_hightech/tikz_process_steps/silicification.a.tex
index 890d1769f19937ecfbf8fc0d028964c4dfb94c94..b4c2493d8adb373597572f6f3bcbbcdff6350c2e 100644
--- a/process_steps/process_hightech/tikz_process_steps/silicification.a.tex
+++ b/process_steps/process_hightech/tikz_process_steps/silicification.a.tex
@@ -1,3 +1,5 @@
+\fill[isolationoxide] (0,0) rectangle (55.0,\LowerMetal);
+
 \paintactivecover{nitride}{0.5}
 \paintactivecover{isolationoxide}{0.25}
 
diff --git a/process_steps/process_hightech/tikz_process_steps/sti.cmp.b.tex b/process_steps/process_hightech/tikz_process_steps/sti.cmp.b.tex
index cc86519e7ccae8a5f6e85f364620bdeb41d1bdf7..bf8a516cb27ad53d40481bd1e43183d12292183f 100644
--- a/process_steps/process_hightech/tikz_process_steps/sti.cmp.b.tex
+++ b/process_steps/process_hightech/tikz_process_steps/sti.cmp.b.tex
@@ -37,4 +37,6 @@
 \fill[isolationoxide] (35.25,\STIIslandSurface)      rectangle (42.25,\STIIslandSurface+0.25);
 \fill[nitride]        (35.25,\STIIslandSurface+0.25) rectangle (42.25,\STIIslandSurface+1.0);
 
+\draw[<->] (42.25,\STIIslandSurface+1.0) -- (42.25,\STIIslandSurface);
+\node at (42.5,\STIIslandSurface+0.5) {$\Delta h$};