diff --git a/src/icons/generator/iconOpacity.ts b/src/icons/generator/iconOpacity.ts
index 4886be7e1c..f19fab4d10 100644
--- a/src/icons/generator/iconOpacity.ts
+++ b/src/icons/generator/iconOpacity.ts
@@ -30,7 +30,13 @@ export const setIconOpacity = (opacity: string) => {
                 const svgRootElement = getSVGRootElement(svg);
                 if (!svgRootElement) return;
 
-                const updatedRootElement = addOpacityAttribute(svgRootElement, opacity);
+                let updatedRootElement: string;
+                if (+opacity !== 1) {
+                    updatedRootElement = addOpacityAttribute(svgRootElement, opacity);
+                } else {
+                    // if the opacity equals 1 then remove the attribute
+                    updatedRootElement = removeOpacityAttribute(svgRootElement);
+                }
                 const updatedSVG = svg.replace(/<svg[^>]*>/, updatedRootElement);
 
                 fs.writeFileSync(svgFilePath, updatedSVG);
@@ -50,8 +56,7 @@ export const setIconOpacity = (opacity: string) => {
  * @param opacity Opacity value
  */
 export const validateOpacityValue = (opacity: string) => {
-    const pattern = new RegExp(/^([0]?\.\d+)|(1(.0)?)$/);
-    return pattern.test(opacity);
+    return +opacity >= 0 && +opacity <= 1;
 };
 
 /**
@@ -81,3 +86,16 @@ const addOpacityAttribute = (svgRoot: string, opacity: string) => {
         return svgRoot.replace(/^<svg/, `<svg opacity="${opacity}"`);
     }
 };
+
+/**
+ * Remove the opacity attribute of the SVG icon.
+ * @param svgRoot Root element of the SVG icon.
+ */
+const removeOpacityAttribute = (svgRoot: string) => {
+    const pattern = new RegExp(/\sopacity="[\d.]+"/);
+    // check if the opacity attribute exists
+    if (pattern.test(svgRoot)) {
+        return svgRoot.replace(pattern, '');
+    }
+    return svgRoot;
+};
diff --git a/src/icons/generator/index.ts b/src/icons/generator/index.ts
index 42d6901211..0bda060bbd 100644
--- a/src/icons/generator/index.ts
+++ b/src/icons/generator/index.ts
@@ -3,3 +3,4 @@ export * from './folderGenerator';
 export * from './languageGenerator';
 export * from './constants';
 export * from './jsonGenerator';
+export * from './iconOpacity';
diff --git a/src/icons/generator/jsonGenerator.ts b/src/icons/generator/jsonGenerator.ts
index f70459a1d2..1c28858a6c 100644
--- a/src/icons/generator/jsonGenerator.ts
+++ b/src/icons/generator/jsonGenerator.ts
@@ -6,8 +6,7 @@ import { fileIcons } from '../fileIcons';
 import { folderIcons } from '../folderIcons';
 import { languageIcons } from '../languageIcons';
 import { iconJsonName } from './constants';
-import { setIconOpacity } from './iconOpacity';
-import { generateFolderIcons, getFileIconDefinitions, getFolderIconDefinitions, getLanguageIconDefinitions } from './index';
+import { generateFolderIcons, getFileIconDefinitions, getFolderIconDefinitions, getLanguageIconDefinitions, setIconOpacity } from './index';
 
 /**
  * Generate the complete icon configuration object that can be written as JSON file.