diff --git a/substrate/primitives/core/src/ecdsa.rs b/substrate/primitives/core/src/ecdsa.rs
index a836eb0e4c..8d2ba4a3d1 100644
--- a/substrate/primitives/core/src/ecdsa.rs
+++ b/substrate/primitives/core/src/ecdsa.rs
@@ -678,18 +678,34 @@ mod test {
 
 	#[test]
 	fn ss58check_custom_format_works() {
-		use crate::crypto::Ss58AddressFormat;
-		// temp save default format version
-		let default_format = Ss58AddressFormat::default();
-		// set current ss58 version is custom "200" `Ss58AddressFormat::Custom(200)`
-		set_default_ss58_version(Ss58AddressFormat::Custom(200));
-		// custom addr encoded by version 200
-		let addr = "2X64kMNEWAW5KLZMSKcGKEc96MyuaRsRUku7vomuYxKgqjVCRj";
-		Public::from_ss58check(&addr).unwrap();
-		set_default_ss58_version(default_format);
-		// set  current ss58 version to default version
-		let addr = "KWAfgC2aRG5UVD6CpbPQXCx4YZZUhvWqqAJE6qcYc9Rtr6g5C";
-		Public::from_ss58check(&addr).unwrap();
+		// We need to run this test in its own process to not interfere with other tests running in
+		// parallel and also relying on the ss58 version.
+		if std::env::var("RUN_CUSTOM_FORMAT_TEST") == Ok("1".into()) {
+			use crate::crypto::Ss58AddressFormat;
+			// temp save default format version
+			let default_format = Ss58AddressFormat::default();
+			// set current ss58 version is custom "200" `Ss58AddressFormat::Custom(200)`
+			set_default_ss58_version(Ss58AddressFormat::Custom(200));
+			// custom addr encoded by version 200
+			let addr = "2X64kMNEWAW5KLZMSKcGKEc96MyuaRsRUku7vomuYxKgqjVCRj";
+			Public::from_ss58check(&addr).unwrap();
+			set_default_ss58_version(default_format);
+			// set current ss58 version to default version
+			let addr = "KWAfgC2aRG5UVD6CpbPQXCx4YZZUhvWqqAJE6qcYc9Rtr6g5C";
+			Public::from_ss58check(&addr).unwrap();
+
+			println!("CUSTOM_FORMAT_SUCCESSFUL");
+		} else {
+			let executable = std::env::current_exe().unwrap();
+			let output = std::process::Command::new(executable)
+				.env("RUN_CUSTOM_FORMAT_TEST", "1")
+				.args(&["--nocapture", "ss58check_custom_format_works"])
+				.output()
+				.unwrap();
+
+			let output = String::from_utf8(output.stdout).unwrap();
+			assert!(output.contains("CUSTOM_FORMAT_SUCCESSFUL"));
+		}
 	}
 
 	#[test]