diff --git a/src/pages/tools/csv/csv-to-yaml/index.tsx b/src/pages/tools/csv/csv-to-yaml/index.tsx
index c626f8d..57d8558 100644
--- a/src/pages/tools/csv/csv-to-yaml/index.tsx
+++ b/src/pages/tools/csv/csv-to-yaml/index.tsx
@@ -178,7 +178,7 @@ export default function CsvToYaml({
             value={values.spaces}
             type="number"
             onOwnChange={(val) => updateField('spaces', Number(val))}
-            inputProps={{ min: 0 }}
+            inputProps={{ min: 1 }}
             description={
               'Set the number of spaces to use for YAML indentation.'
             }
diff --git a/src/pages/tools/csv/csv-to-yaml/service.ts b/src/pages/tools/csv/csv-to-yaml/service.ts
index 587905a..8947516 100644
--- a/src/pages/tools/csv/csv-to-yaml/service.ts
+++ b/src/pages/tools/csv/csv-to-yaml/service.ts
@@ -6,6 +6,9 @@ function toYaml(
   input: Record<string, string>[] | string[][],
   indentSpaces: number = 2
 ): string {
+  if (indentSpaces == 0) {
+    throw new Error('Indent spaces must be greater than zero');
+  }
   const indent = ' '.repeat(indentSpaces);
 
   if (