diff --git a/src/osgPlugins/txp/trpage_material.cpp b/src/osgPlugins/txp/trpage_material.cpp
index bec3a8250..ecc95f54e 100644
--- a/src/osgPlugins/txp/trpage_material.cpp
+++ b/src/osgPlugins/txp/trpage_material.cpp
@@ -26,7 +26,7 @@
 #include <trpage_geom.h>
 #include <trpage_read.h>
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #define strcasecmp _stricmp
 #endif