diff --git a/substrate/utils/wasm-builder/src/lib.rs b/substrate/utils/wasm-builder/src/lib.rs
index 195527a122..8c80181bb8 100644
--- a/substrate/utils/wasm-builder/src/lib.rs
+++ b/substrate/utils/wasm-builder/src/lib.rs
@@ -166,8 +166,8 @@ pub fn build_project_with_default_rustflags(
 				pub const WASM_BINARY: &[u8] = include_bytes!("{wasm_binary}");
 				pub const WASM_BINARY_BLOATY: &[u8] = include_bytes!("{wasm_binary_bloaty}");
 			"#,
-			wasm_binary = wasm_binary.wasm_binary_path(),
-			wasm_binary_bloaty = bloaty.wasm_binary_bloaty_path(),
+			wasm_binary = wasm_binary.wasm_binary_path_escaped(),
+			wasm_binary_bloaty = bloaty.wasm_binary_bloaty_path_escaped(),
 		),
 	);
 }
diff --git a/substrate/utils/wasm-builder/src/wasm_project.rs b/substrate/utils/wasm-builder/src/wasm_project.rs
index 6248f81935..41e8694b85 100644
--- a/substrate/utils/wasm-builder/src/wasm_project.rs
+++ b/substrate/utils/wasm-builder/src/wasm_project.rs
@@ -37,9 +37,9 @@ use itertools::Itertools;
 pub struct WasmBinaryBloaty(PathBuf);
 
 impl WasmBinaryBloaty {
-	/// Returns the path to the bloaty wasm binary.
-	pub fn wasm_binary_bloaty_path(&self) -> String {
-		self.0.display().to_string().replace('\\', "/")
+	/// Returns the escaped path to the bloaty wasm binary.
+	pub fn wasm_binary_bloaty_path_escaped(&self) -> String {
+		self.0.display().to_string().escape_default().to_string()
 	}
 }
 
@@ -48,8 +48,13 @@ pub struct WasmBinary(PathBuf);
 
 impl WasmBinary {
 	/// Returns the path to the wasm binary.
-	pub fn wasm_binary_path(&self) -> String {
-		self.0.display().to_string().replace('\\', "/")
+	pub fn wasm_binary_path(&self) -> &Path {
+		&self.0
+	}
+
+	/// Returns the escaped path to the wasm binary.
+	pub fn wasm_binary_path_escaped(&self) -> String {
+		self.0.display().to_string().escape_default().to_string()
 	}
 }