diff --git a/roles/custom/matrix-synapse/defaults/main.yml b/roles/custom/matrix-synapse/defaults/main.yml
index b60347fbb..9bdafe207 100644
--- a/roles/custom/matrix-synapse/defaults/main.yml
+++ b/roles/custom/matrix-synapse/defaults/main.yml
@@ -564,10 +564,10 @@ matrix_synapse_caches_sync_response_cache_duration: "2m"
 matrix_synapse_cache_size_calculations_memtotal_bytes: "{{ (ansible_memtotal_mb * 1024 * 1024) | int }}"
 
 # Controls the cap to use for matrix_synapse_cache_autotuning_max_cache_memory_usage.
-matrix_synapse_cache_size_calculations_max_cache_memory_usage_cap_bytes: "{{ (2 * 1024 * 1024 * 1024) }}" # 2GB
+matrix_synapse_cache_size_calculations_max_cache_memory_usage_cap_bytes: "{{ (2 * 1024 * 1024 * 1024) }}"  # 2GB
 
 # Controls the cap to use for matrix_synapse_cache_autotuning_target_cache_memory_usage.
-matrix_synapse_cache_size_calculations_target_cache_memory_usage_cap_bytes: "{{ (1 * 1024 * 1024 * 1024) }}" # 1GB
+matrix_synapse_cache_size_calculations_target_cache_memory_usage_cap_bytes: "{{ (1 * 1024 * 1024 * 1024) }}"  # 1GB
 
 matrix_synapse_cache_autotuning_min_cache_ttl: "30s"