diff --git a/core/runtime/src/main/java/io/quarkus/runtime/configuration/CharsetConverter.java b/core/runtime/src/main/java/io/quarkus/runtime/configuration/CharsetConverter.java
index 792084b76968d..cd1436fca8e32 100644
--- a/core/runtime/src/main/java/io/quarkus/runtime/configuration/CharsetConverter.java
+++ b/core/runtime/src/main/java/io/quarkus/runtime/configuration/CharsetConverter.java
@@ -25,6 +25,10 @@ public Charset convert(String value) {
 
         String trimmedCharset = value.trim();
 
+        if (trimmedCharset.isEmpty()) {
+            return null;
+        }
+
         try {
             return Charset.forName(trimmedCharset);
         } catch (Exception e) {