diff --git a/inc_vars.php b/inc_vars.php
index 94f9724d6823e1e01e97ac0ed1964743de419c53..c5b383c5c47b02adc22d9943826f0e780dbb127c 100644
--- a/inc_vars.php
+++ b/inc_vars.php
@@ -37,4 +37,4 @@ switch ($myos) {
 }
 $myosextension=$myos=="Win" ? ".exe" : "";
 
-$SPC="$selfdir/$dirExternal/bin/spc$myosextension";
+$SPC=str_replace('/', DIRECTORY_SEPARATOR , "$selfdir/$dirExternal/bin/spc$myosextension");