diff --git a/build/libifm.php b/build/libifm.php
index 01fd21d..fe69dd8 100644
--- a/build/libifm.php
+++ b/build/libifm.php
@@ -2897,7 +2897,7 @@ function IFM( params ) {
 					return false;
 		}
 		// custom limitations
-		foreach( $this->config->forbiddenChars as $char )
+		foreach( $this->config['forbiddenChars'] as $char )
 			if( strpos( $f, $char ) !== false )
 				return false;
 		return true;
diff --git a/ifm.php b/ifm.php
index 09ac7b2..81856e5 100644
--- a/ifm.php
+++ b/ifm.php
@@ -2897,7 +2897,7 @@ function IFM( params ) {
 					return false;
 		}
 		// custom limitations
-		foreach( $this->config->forbiddenChars as $char )
+		foreach( $this->config['forbiddenChars'] as $char )
 			if( strpos( $f, $char ) !== false )
 				return false;
 		return true;
diff --git a/src/main.php b/src/main.php
index ca8b358..3373254 100644
--- a/src/main.php
+++ b/src/main.php
@@ -980,7 +980,7 @@ f00bar;
 					return false;
 		}
 		// custom limitations
-		foreach( $this->config->forbiddenChars as $char )
+		foreach( $this->config['forbiddenChars'] as $char )
 			if( strpos( $f, $char ) !== false )
 				return false;
 		return true;