diff --git a/composer.json b/composer.json
index d002c66..a98fc7d 100644
--- a/composer.json
+++ b/composer.json
@@ -32,6 +32,7 @@
 		"files": [ "revisions-cli.php" ]
 	},
 	"require-dev": {
+		"wp-cli/entity-command": "^1.3 || ^2",
 		"wp-cli/wp-cli-tests": "^4"
 	},
 	"minimum-stability": "dev",
diff --git a/features/list.feature b/features/list.feature
index cf1a45c..5185080 100644
--- a/features/list.feature
+++ b/features/list.feature
@@ -59,3 +59,17 @@ Feature: Revisions
       """
       []
       """
+
+    When I run `wp revisions generate 5 --post_type=page`
+    And I run `wp revisions list --post_type=page --format=count`
+    Then STDOUT should contain:
+      """
+      10
+      """
+
+    When I run `wp post delete $(wp post list --post_type=page --field=ID) --force`
+    And I run `wp revisions list --post_type=page --format=count`
+    Then STDOUT should contain:
+      """
+      0
+      """
diff --git a/inc/class-revisions-cli.php b/inc/class-revisions-cli.php
index 0eedf85..e756386 100644
--- a/inc/class-revisions-cli.php
+++ b/inc/class-revisions-cli.php
@@ -104,19 +104,21 @@ function ( $i ) {
 				wp_parse_slug_list( $assoc_args['post_type'] )
 			);
 			$where      = sprintf( 'AND post_type IN ( %s )', implode( ',', $post_types ) );
-
 			// get all IDs for posts in given post type(s).
-			$ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE 1=2 {$where}" );
-
-			// Prepare the IDs for inclusion in the query.
-			$post__in = array_map( 'esc_sql', $ids );
-			$post__in = implode( ',', $ids );
+			$ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE 1=1 {$where}" );
 
-			// get revisions of those IDs.
-			$revs = $wpdb->get_results(
-				"SELECT * FROM $wpdb->posts WHERE post_type = 'revision' AND post_parent IN ({$post__in}) ORDER BY post_parent DESC"
-			);
+			if ( $ids ) {
+				// Prepare the IDs for inclusion in the query.
+				$post__in = array_map( 'esc_sql', $ids );
+				$post__in = implode( ',', $ids );
 
+				// get revisions of those IDs.
+				$revs = $wpdb->get_results(
+					"SELECT * FROM $wpdb->posts WHERE post_type = 'revision' AND post_parent IN ({$post__in}) ORDER BY post_parent DESC"
+				);
+			} else {
+				$revs = [];
+			}
 		} else {
 
 			$revs = $wpdb->get_results(