diff --git a/src/state.ts b/src/state.ts
index fbbbf56..af1436f 100644
--- a/src/state.ts
+++ b/src/state.ts
@@ -61,6 +61,7 @@ export interface GlobalSession extends Session {
 export async function loadAll(): Promise<GlobalSession[]> {
   const sandlotDir = join(homedir(), ".sandlot")
   const all: GlobalSession[] = []
+  const seen = new Set<string>()
 
   let repoDirs
   try {
@@ -89,7 +90,8 @@ export async function loadAll(): Promise<GlobalSession[]> {
       }
     }
 
-    if (repoRoot) {
+    if (repoRoot && !seen.has(repoRoot)) {
+      seen.add(repoRoot)
       try {
         const st = await load(repoRoot)
         for (const session of Object.values(st.sessions)) {