diff --git a/pageserver/src/tenant/timeline.rs b/pageserver/src/tenant/timeline.rs
index 03803b114c..028e9e0e28 100644
--- a/pageserver/src/tenant/timeline.rs
+++ b/pageserver/src/tenant/timeline.rs
@@ -3867,8 +3867,8 @@ impl Timeline {
         let (_, last_tier_size) = *tier_sizes.last().unwrap();
         let estimated_space_amp = (total_tier_size - last_tier_size) as f64 / last_tier_size as f64;
         if estimated_space_amp > space_amplification_ratio {
-            if !tier_sizes.is_empty() {
-                info!("full compaction cannot be triggered as some layers are being compacted");
+            if !skip_tiers.is_empty() {
+                info!("full compaction cannot be triggered as some layers are being compacted: {:?}", skip_tiers);
             } else {
                 info!("full compaction triggered by space amplification");
                 let tiers = tier_sizes