diff --git a/src/main/java/net/hostsharing/hsadminng/config/JsonObjectMapperConfiguration.java b/src/main/java/net/hostsharing/hsadminng/config/JsonObjectMapperConfiguration.java
index d7d535c3..d5ff80d9 100644
--- a/src/main/java/net/hostsharing/hsadminng/config/JsonObjectMapperConfiguration.java
+++ b/src/main/java/net/hostsharing/hsadminng/config/JsonObjectMapperConfiguration.java
@@ -3,7 +3,6 @@ package net.hostsharing.hsadminng.config;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.SerializationFeature;
-import com.fasterxml.jackson.databind.module.SimpleModule;
 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import org.openapitools.jackson.nullable.JsonNullableModule;
 import org.springframework.context.annotation.Bean;
@@ -11,7 +10,6 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Primary;
 import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
 
-import java.math.BigDecimal;
 
 @Configuration
 public class JsonObjectMapperConfiguration {
diff --git a/src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/TemplateResolver.java b/src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/TemplateResolver.java
index b6fac263..7197e900 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/TemplateResolver.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/office/scenarios/TemplateResolver.java
@@ -22,25 +22,25 @@ public class TemplateResolver {
     enum PlaceholderPrefix {
         RAW('%') {
             @Override
-            String convert(final Object value, final Resolver resolver) {
+            String convert(final String value, final Resolver resolver) {
                 return value != null ? value.toString() : "";
             }
         },
         JSON_QUOTED('$'){
             @Override
-            String convert(final Object value, final Resolver resolver) {
+            String convert(final String value, final Resolver resolver) {
                 return jsonQuoted(value);
             }
         },
         URI_ENCODED('&'){
             @Override
-            String convert(final Object value, final Resolver resolver) {
+            String convert(final String value, final Resolver resolver) {
                 return value != null ? URLEncoder.encode(value.toString(), StandardCharsets.UTF_8) : "";
             }
         },
         COMMENT('#'){
             @Override
-            String convert(final Object value, final Resolver resolver) {
+            String convert(final String value, final Resolver resolver) {
                 return resolver == DROP_COMMENTS ? "" : value.toString();
             }
         };
@@ -59,7 +59,7 @@ public class TemplateResolver {
             return Arrays.stream(values()).filter(p -> p.prefixChar == givenChar).findFirst().orElseThrow();
         }
 
-        abstract String convert(final Object value, final Resolver resolver); // FIXME: why Object and not String?
+        abstract String convert(final String value, final Resolver resolver); // FIXME: why Object and not String?
     }
 
     private final static Pattern pattern = Pattern.compile(",(\\s*})", Pattern.MULTILINE);
@@ -136,7 +136,7 @@ public class TemplateResolver {
             }
         }
         final var content = new TemplateResolver(placeholder.toString(), properties).resolve(resolver);
-        final var value = intro != '#' ? propVal(content) : content;
+        final var value = intro != '#' ? propVal(content).toString() : content;
         resolved.append(
                 PlaceholderPrefix.ofPrefixChar(intro).convert(value, resolver)
         );