diff --git a/NT/tools/install b/NT/tools/install
index c1a4d7f00958c10adbf458ca5d87a27e195658a5..9c2dac2fb175cf544edf6e62544372dc37f9bbf6 100755
--- a/NT/tools/install
+++ b/NT/tools/install
@@ -4,7 +4,7 @@ inherit "lib.pike";
 
 int main(int argc, string *argv)
 {
-  if(sscanf(argv[-1],"%*[a-zA-Z]:%*s"))
+  if(sscanf(argv[-1],"%*[a-zA-Z]:%*s")==2)
   {
     argv[0]="copy";
     if(argv[1]=="-c") argv=argv[..0]+argv[2..];