diff --git a/tools/wpical/generate_mrcal.py b/tools/wpical/generate_mrcal.py
index 151ab9af753..6242ce46c66 100755
--- a/tools/wpical/generate_mrcal.py
+++ b/tools/wpical/generate_mrcal.py
@@ -20,7 +20,8 @@ def main(argv):
 
     args.output_directory.mkdir(parents=True, exist_ok=True)
     result = subprocess.check_output(
-        f"{dirname}/src/main/native/thirdparty/mrcal/src/minimath/minimath_generate.pl"
+        "./src/main/native/thirdparty/mrcal/src/minimath/minimath_generate.pl",
+        cwd=dirname,
     )
     (args.output_directory / "minimath_generated.h").write_text(
         str(result, encoding="UTF8")
diff --git a/tools/wpical/src/main/native/thirdparty/mrcal/generated/minimath_generated.h b/tools/wpical/src/main/native/thirdparty/mrcal/generated/minimath_generated.h
index 2d758c99b6f..c5146d4c708 100644
--- a/tools/wpical/src/main/native/thirdparty/mrcal/generated/minimath_generated.h
+++ b/tools/wpical/src/main/native/thirdparty/mrcal/generated/minimath_generated.h
@@ -1,4 +1,4 @@
-// THIS IS AUTO-GENERATED BY /home/runner/work/allwpilib/allwpilib/tools/wpical/src/main/native/thirdparty/mrcal/src/minimath/minimath_generate.pl. DO NOT EDIT BY HAND
+// THIS IS AUTO-GENERATED BY ./src/main/native/thirdparty/mrcal/src/minimath/minimath_generate.pl. DO NOT EDIT BY HAND
 
 // This contains dot products, norms, basic vector arithmetic and multiplication