diff --git a/crates/cli/src/commands/spam.rs b/crates/cli/src/commands/spam.rs
index cf64437..ee2393b 100644
--- a/crates/cli/src/commands/spam.rs
+++ b/crates/cli/src/commands/spam.rs
@@ -59,8 +59,7 @@ pub async fn spam(
     let mut agents = AgentStore::new();
     let signers_per_period = args
         .txs_per_block
-        .unwrap_or(args.txs_per_second.unwrap_or(spam.len()))
-        / spam.len();
+        .unwrap_or(args.txs_per_second.unwrap_or(spam.len()));
 
     let mut all_signers = vec![];
     all_signers.extend_from_slice(&user_signers);
diff --git a/crates/cli/src/util.rs b/crates/cli/src/util.rs
index 3fe8eb9..616399f 100644
--- a/crates/cli/src/util.rs
+++ b/crates/cli/src/util.rs
@@ -77,6 +77,9 @@ pub fn get_spam_pools(testconfig: &TestConfig) -> Vec<String> {
         }
     }
 
+    // filter out non-unique pools
+    from_pools.sort();
+    from_pools.dedup();
     from_pools
 }