diff --git a/Cargo.toml b/Cargo.toml
index bdb455031b839d843652c4d1efe6e6dd3c629461..4205858e25b15da5654e0a283d3602e6dc9a6063 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -282,7 +282,7 @@ untrusted = "0.6.2"
 [target.'cfg(target_os = "linux")'.dependencies]
 libc = { version = "0.2.34" }
 
-[target.'cfg(any(target_os = "redox", all(unix, not(any(target_os = "macos", target_os = "ios")))))'.dependencies]
+[target.'cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))'.dependencies]
 lazy_static = "1.2"
 
 # Keep this in sync with `[dependencies]` in pregenerate_asm/Cargo.toml.
diff --git a/src/rand.rs b/src/rand.rs
index d5434f655e5956fe7dab6bceceb43e7c83b67e42..265244b69fa76e3b86fdfeae8eeefdba2f856fab 100644
--- a/src/rand.rs
+++ b/src/rand.rs
@@ -193,7 +193,7 @@ mod urandom {
     pub fn fill(dest: &mut [u8]) -> Result<(), error::Unspecified> {
         #[cfg(target_os = "redox")]
         static RANDOM_PATH: &str = "rand:";
-        #[cfg(unix)]
+        #[cfg(all(unix, not(target_os = "redox")))]
         static RANDOM_PATH: &str = "/dev/urandom";
 
         lazy_static! {