diff --git a/src/tools/case-converter/case-converter.vue b/src/tools/case-converter/case-converter.vue
index 2ef69e35..1bf8409b 100644
--- a/src/tools/case-converter/case-converter.vue
+++ b/src/tools/case-converter/case-converter.vue
@@ -62,7 +62,7 @@ import {
 import InputCopyable from '../../components/InputCopyable.vue';
 
 const baseConfig = {
-  stripRegexp: /[^A-Za-zÀ-ÖØ-öø-ÿ]+/,
+  stripRegexp: /[^A-Za-zÀ-ÖØ-öø-ÿ]+/gi,
 };
 
 const input = ref('lorem ipsum dolor sit amet');