diff --git a/include/osgDB/FileNameUtils b/include/osgDB/FileNameUtils
index da9b11424..49c968769 100644
--- a/include/osgDB/FileNameUtils
+++ b/include/osgDB/FileNameUtils
@@ -135,7 +135,7 @@ struct FileNameComparator
 
 void stringcopy(char* dest, const char* src, size_t length);
 
-#define stringcopyfixedsize(DEST, SRC) stringcopy(DEST, SRC, sizeof(DEST));
+#define stringcopyfixedsize(DEST, SRC) osgDB::stringcopy(DEST, SRC, sizeof(DEST));
 
 }