diff --git a/packages/taler-harness/src/index.ts b/packages/taler-harness/src/index.ts
index 841e17dc7..0efaea9ad 100644
--- a/packages/taler-harness/src/index.ts
+++ b/packages/taler-harness/src/index.ts
@@ -196,7 +196,7 @@ configCli
       res = config.getPath(args.get.section, args.get.option);
     }
     if (res.isDefined()) {
-      console.log(res.value);
+      console.log(res.getValue());
     } else {
       console.warn("not found");
       process.exit(1);
diff --git a/packages/taler-util/src/talerconfig.ts b/packages/taler-util/src/talerconfig.ts
index 098f5f9a4..e9eb71279 100644
--- a/packages/taler-util/src/talerconfig.ts
+++ b/packages/taler-util/src/talerconfig.ts
@@ -82,7 +82,7 @@ export class ConfigValue<T> {
     private optionName: string,
     private value: string | undefined,
     private converter: (x: string) => T,
-  ) {}
+  ) { }
 
   required(): T {
     if (this.value == undefined) {
@@ -112,6 +112,10 @@ export class ConfigValue<T> {
   isDefined(): boolean {
     return this.value !== undefined;
   }
+
+  getValue(): string | undefined {
+    return this.value
+  }
 }
 
 /**
@@ -245,7 +249,7 @@ function globMatch(pattern: string, str: string): boolean {
   /* Backtrack position in pattern */
   let patBt = -1;
 
-  for (;;) {
+  for (; ;) {
     if (pattern[patPos] === "*") {
       strBt = strPos;
       patBt = patPos++;