Fix String.format

1 files changed, 1 insertions, 1 deletions

diff --git a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java
index d7a503f5dcd..ba1952545a0 100644
--- a/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java
+++ b/node-admin/src/main/java/com/yahoo/vespa/hosted/node/admin/task/util/yum/Yum.java
@@ -59,7 +59,7 @@ public class Yum {
         List<Function<String, YumPackageName.Builder>> builders = PACKAGE_NAME_BUILDERS_GENERATOR.apply(builder);
         List<Optional<String>> lines = commandResult.mapEachLine(line -> Optional.of(line).filter(s -> !"(none)".equals(s)));
         if (lines.size() != builders.size()) throw new IllegalStateException(String.format(
-                "Unexpected response from rpm, expected %d lines, got %d" + builders.size(), commandResult.getOutput()));
+                "Unexpected response from rpm, expected %d lines, got %s", builders.size(), commandResult.getOutput()));
 
         IntStream.range(0, builders.size()).forEach(i -> lines.get(i).ifPresent(builders.get(i)::apply));
         return Optional.of(builder.build());