diff --git a/modules/plugin/base/src/nsPluginsDirWin.cpp b/modules/plugin/base/src/nsPluginsDirWin.cpp
index 7a13ff5bff5..879090653f5 100644
--- a/modules/plugin/base/src/nsPluginsDirWin.cpp
+++ b/modules/plugin/base/src/nsPluginsDirWin.cpp
@@ -138,7 +138,7 @@ nsPluginsDir::nsPluginsDir(PRUint16 location)
 
     plugDir += "plugins";
     *(nsFileSpec*)this = plugDir;
-    PR_snprintf(path, 2000, "%s", (const char *) plugDir);
+    PR_snprintf(path, sizeof(path), "%s", (const char *) plugDir);
     
   }
 
diff --git a/modules/plugin/nglsrc/nsPluginsDirWin.cpp b/modules/plugin/nglsrc/nsPluginsDirWin.cpp
index 7a13ff5bff5..879090653f5 100644
--- a/modules/plugin/nglsrc/nsPluginsDirWin.cpp
+++ b/modules/plugin/nglsrc/nsPluginsDirWin.cpp
@@ -138,7 +138,7 @@ nsPluginsDir::nsPluginsDir(PRUint16 location)
 
     plugDir += "plugins";
     *(nsFileSpec*)this = plugDir;
-    PR_snprintf(path, 2000, "%s", (const char *) plugDir);
+    PR_snprintf(path, sizeof(path), "%s", (const char *) plugDir);
     
   }