diff --git a/scripts/compile_shader.py b/scripts/compile_shader.py
index 15fba96..a4a3363 100644
--- a/scripts/compile_shader.py
+++ b/scripts/compile_shader.py
@@ -130,7 +130,7 @@ def main():
             print(f"fixup depfile {depfile_path}")
         with open(depfile_path, "r") as f:
             depfile = f.read()
-        depfile = re.sub("^(.*):(?!\\\\)", args.implementation_path.name + ":", depfile)
+        depfile = re.sub("^(.*):(?![\\\\/])", args.implementation_path.name + ":", depfile)
         with open(depfile_path, "w") as f:
             f.write(depfile)