diff --git a/src/crdt.rs b/src/crdt.rs
index ee05a7230..3c4daf30a 100644
--- a/src/crdt.rs
+++ b/src/crdt.rs
@@ -1910,9 +1910,11 @@ mod tests {
         assert!(rv.is_none());
 
         fn tmp_ledger(name: &str) -> String {
+            use std::env;
+            let out_dir = env::var("OUT_DIR").unwrap();
             let keypair = Keypair::new();
 
-            let path = format!("/tmp/farf/{}-{}", name, keypair.pubkey());
+            let path = format!("{}/tmp-ledger-{}-{}", out_dir, name, keypair.pubkey());
 
             let mut writer = LedgerWriter::open(&path, true).unwrap();
             let zero = Hash::default();
diff --git a/src/drone.rs b/src/drone.rs
index 0e40e81d0..698b0e2d3 100644
--- a/src/drone.rs
+++ b/src/drone.rs
@@ -260,9 +260,11 @@ mod tests {
     }
 
     fn tmp_ledger_path(name: &str) -> String {
+        use std::env;
+        let out_dir = env::var("OUT_DIR").unwrap();
         let keypair = Keypair::new();
 
-        format!("/tmp/tmp-ledger-{}-{}", name, keypair.pubkey())
+        format!("{}/tmp-ledger-{}-{}", out_dir, name, keypair.pubkey())
     }
 
     #[test]
diff --git a/src/ledger.rs b/src/ledger.rs
index c0eadfc19..1f558d550 100644
--- a/src/ledger.rs
+++ b/src/ledger.rs
@@ -549,9 +549,11 @@ mod tests {
     use transaction::{Transaction, Vote};
 
     fn tmp_ledger_path(name: &str) -> String {
+        use std::env;
+        let out_dir = env::var("OUT_DIR").unwrap();
         let keypair = Keypair::new();
 
-        format!("/tmp/tmp-ledger-{}-{}", name, keypair.pubkey())
+        format!("{}/tmp-ledger-{}-{}", out_dir, name, keypair.pubkey())
     }
 
     #[test]
diff --git a/src/thin_client.rs b/src/thin_client.rs
index 689129fc9..918c7c1d0 100755
--- a/src/thin_client.rs
+++ b/src/thin_client.rs
@@ -331,9 +331,11 @@ mod tests {
     use transaction::{Instruction, Plan};
 
     fn tmp_ledger(name: &str, mint: &Mint) -> String {
+        use std::env;
+        let out_dir = env::var("OUT_DIR").unwrap();
         let keypair = Keypair::new();
 
-        let path = format!("/tmp/tmp-ledger-{}-{}", name, keypair.pubkey());
+        let path = format!("{}/tmp-ledger-{}-{}", out_dir, name, keypair.pubkey());
 
         let mut writer = LedgerWriter::open(&path, true).unwrap();
         writer.write_entries(mint.create_entries()).unwrap();