diff --git a/setup/compiler.class.inc.php b/setup/compiler.class.inc.php
index c125eb90a..0d0549284 100644
--- a/setup/compiler.class.inc.php
+++ b/setup/compiler.class.inc.php
@@ -1092,6 +1092,10 @@ EOF;
 						$sIcon = $sModuleRelativeDir.'/'.$sIcon;
 						$sIcon = "utils::GetAbsoluteUrlModulesRoot().'$sIcon'";
 					}
+					else
+					{
+						$sIcon = "''";
+					}
 					switch($sColor)
 					{
 						// Known PHP constants: keep the literal value as-is