diff --git a/extensions/gii/generators/crud/Generator.php b/extensions/gii/generators/crud/Generator.php
index 8ea1ff6..1925de2 100644
--- a/extensions/gii/generators/crud/Generator.php
+++ b/extensions/gii/generators/crud/Generator.php
@@ -278,7 +278,7 @@ class Generator extends \yii\gii\Generator
 
 		$rules = [];
 		foreach ($types as $type => $columns) {
-			$rules[] = "['" . implode(', ', $columns) . "', '$type']";
+			$rules[] = "[['" . implode("', '", $columns) . "'], '$type']";
 		}
 
 		return $rules;
diff --git a/extensions/gii/generators/model/Generator.php b/extensions/gii/generators/model/Generator.php
index 976fde8..32ba2e5 100644
--- a/extensions/gii/generators/model/Generator.php
+++ b/extensions/gii/generators/model/Generator.php
@@ -237,10 +237,10 @@ class Generator extends \yii\gii\Generator
 
 		$rules = [];
 		foreach ($types as $type => $columns) {
-			$rules[] = "[['" . implode(', ', $columns) . "'], '$type']";
+			$rules[] = "[['" . implode("', '", $columns) . "'], '$type']";
 		}
 		foreach ($lengths as $length => $columns) {
-			$rules[] = "[['" . implode(', ', $columns) . "'], 'string', 'max' => $length]";
+			$rules[] = "[['" . implode("', '", $columns) . "'], 'string', 'max' => $length]";
 		}
 
 		return $rules;