diff --git a/package-lock.json b/package-lock.json
index 0d9c1cb..e2d96de 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@bitpatty/next-image-s3-imgproxy-loader",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@bitpatty/next-image-s3-imgproxy-loader",
-      "version": "0.3.0",
+      "version": "0.3.1",
       "license": "MIT",
       "devDependencies": {
         "@types/react": "^17.0.27",
diff --git a/package.json b/package.json
index 4053d53..9d80920 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bitpatty/next-image-s3-imgproxy-loader",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "imgproxy S3 extension for next/image",
   "author": "Matteias Collet <matteias.collet@bluewin.ch>",
   "main": "dist/index.js",
diff --git a/src/param-builder.ts b/src/param-builder.ts
index a4b6227..4997d6b 100644
--- a/src/param-builder.ts
+++ b/src/param-builder.ts
@@ -39,7 +39,7 @@ class ImgProxyParamBuilder {
         width,
         height,
         ...[gravity?.type, gravity?.center?.x, gravity?.center?.y].filter(
-          (v) => !!v,
+          (v) => v != null,
         ),
       ].join(':'),
     );
@@ -75,7 +75,7 @@ class ImgProxyParamBuilder {
             !!enlarge,
             !!extend,
             ...[gravity?.type, gravity?.center?.x, gravity?.center?.y].filter(
-              (v) => !!v,
+              (v) => v != null,
             ),
           ].join(':')
         : ['resize', type ?? 'fit'].join(':'),