diff --git a/tests/browser/02_ops.js b/tests/browser/02_ops.js
index 6110af93..b580ebad 100644
--- a/tests/browser/02_ops.js
+++ b/tests/browser/02_ops.js
@@ -472,7 +472,7 @@ function testOpImage(browser, opName, filename, args=[]) {
 
     browser
         .waitForElementVisible("#output-html img")
-        .expect.element("#output-html img").to.have.css("width").which.matches(/^[^0]\d*px/);
+        .expect.element("#output-html img").to.have.css("width").which.matches(/^(?!0+(?:\.0+)?px$)\d+(?:\.\d+)?px$/);
 
     browser.execute(function() {
         const output = document.getElementById("output-html");