diff --git a/application/Espo/Resources/metadata/app/regExpPatterns.json b/application/Espo/Resources/metadata/app/regExpPatterns.json
index 25c211196d..06469f240b 100644
--- a/application/Espo/Resources/metadata/app/regExpPatterns.json
+++ b/application/Espo/Resources/metadata/app/regExpPatterns.json
@@ -29,11 +29,11 @@
         "isSystem": true
     },
     "uriOptionalProtocol": {
-        "pattern": "([a-zA-Z0-9]+\\:\\/\\/)?[a-zA-Z0-9%\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',]+\\.([a-zA-Z0-9%\\&\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',])*",
+        "pattern": "([a-zA-Z0-9]+\\:\\/\\/)?[a-zA-Z0-9%\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',]+\\.([a-zA-Z0-9%\\&\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',~])*",
         "isSystem": true
     },
     "uri": {
-        "pattern": "([a-zA-Z0-9]+\\:\\/\\/){1}[a-zA-Z0-9%\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',]+\\.([a-zA-Z0-9%\\&\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',])*",
+        "pattern": "([a-zA-Z0-9]+\\:\\/\\/){1}[a-zA-Z0-9%\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',]+\\.([a-zA-Z0-9%\\&\\.\\/\\?\\:@\\-_=#$!+*\\(\\)',~])*",
         "isSystem": true
     }
 }
diff --git a/client/src/views/fields/url-multiple.js b/client/src/views/fields/url-multiple.js
index 3cfaf6e39a..ca4d5496a4 100644
--- a/client/src/views/fields/url-multiple.js
+++ b/client/src/views/fields/url-multiple.js
@@ -53,13 +53,32 @@ class UrlMultipleFieldView extends ArrayFieldView {
             value = this.strip(value);
         }
 
-        if (value === decodeURI(value)) {
-            value = encodeURI(value);
+        try {
+            if (value === decodeURI(value)) {
+                value = encodeURI(value);
+            }
+        } catch (e) {
+            console.warn(`Malformed URI ${value}.`);
         }
 
         super.addValueFromUi(value);
     }
 
+    /**
+     * @private
+     * @param {string} value
+     * @return {string}
+     */
+    decodeURI(value) {
+        try {
+            return decodeURI(value);
+        } catch (e) {
+            console.warn(`Malformed URI ${value}.`);
+
+            return value;
+        }
+    }
+
     /**
      * @param {string} value
      * @return {string}
@@ -88,7 +107,7 @@ class UrlMultipleFieldView extends ArrayFieldView {
             return $('<a>')
                 .attr('href', this.prepareUrl(value))
                 .attr('target', '_blank')
-                .text(decodeURI(value));
+                .text(this.decodeURI(value));
         });
 
         return $list
@@ -111,7 +130,7 @@ class UrlMultipleFieldView extends ArrayFieldView {
                 .attr('href', this.prepareUrl(value))
                 .css('user-drag', 'none')
                 .attr('target', '_blank')
-                .text(decodeURI(value))
+                .text(this.decodeURI(value))
         );
 
         return $item.get(0).outerHTML;
diff --git a/client/src/views/fields/url.js b/client/src/views/fields/url.js
index fd5bf50231..fb3dbdcb4a 100644
--- a/client/src/views/fields/url.js
+++ b/client/src/views/fields/url.js
@@ -102,7 +102,7 @@ class UrlFieldView extends VarcharFieldView {
                     return;
                 }
 
-                const decoded = parsedValue ? decodeURI(parsedValue) : '';
+                const decoded = parsedValue ? this.decodeURI(parsedValue) : '';
 
                 this.$element.val(decoded);
             });
@@ -112,7 +112,22 @@ class UrlFieldView extends VarcharFieldView {
     getValueForDisplay() {
         const value = this.model.get(this.name);
 
-        return value ? decodeURI(value) : null;
+        return value ? this.decodeURI(value) : null;
+    }
+
+    /**
+     * @private
+     * @param {string} value
+     * @return {string}
+     */
+    decodeURI(value) {
+        try {
+            return decodeURI(value);
+        } catch (e) {
+            console.warn(`Malformed URI ${value}.`);
+
+            return value;
+        }
     }
 
     /**
@@ -126,8 +141,14 @@ class UrlFieldView extends VarcharFieldView {
             value = this.strip(value);
         }
 
-        if (value === decodeURI(value)) {
-            value = encodeURI(value);
+        try {
+            if (value === decodeURI(value)) {
+                value = encodeURI(value);
+            }
+        } catch (e) {
+            console.warn(`Malformed URI ${value}.`);
+
+            return value;
         }
 
         return value;