diff --git a/src/osgPlugins/txp/trpage_material.cpp b/src/osgPlugins/txp/trpage_material.cpp
index ad2a2d7ed..3ca8d7016 100644
--- a/src/osgPlugins/txp/trpage_material.cpp
+++ b/src/osgPlugins/txp/trpage_material.cpp
@@ -1822,6 +1822,7 @@ bool trpgTexTable::Read(trpgReadBuffer &buf)
 
 trpgLocalMaterial::trpgLocalMaterial()
 {
+    baseMatTable = -1;
     baseMat = -1;
     sx = sy = ex = ey = destWidth = destHeight = 0;
     addr.resize(1);