diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
index e6b05183886..af74efa6bf8 100644
--- a/library/std/Cargo.toml
+++ b/library/std/Cargo.toml
@@ -38,7 +38,7 @@ features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive']
 rand = { version = "0.8.5", default-features = false, features = ["alloc"] }
 rand_xorshift = "0.3.0"
 
-[target.'cfg(any(all(target_family = "wasm", not(target_os = "emscripten")), all(target_vendor = "fortanix", target_env = "sgx")))'.dependencies]
+[target.'cfg(any(all(target_family = "wasm", target_os = "unknown"), all(target_vendor = "fortanix", target_env = "sgx")))'.dependencies]
 dlmalloc = { version = "0.2.3", features = ['rustc-dep-of-std'] }
 
 [target.x86_64-fortanix-unknown-sgx.dependencies]