diff --git a/conda_recipe/bld.bat b/conda_recipe/bld.bat
index 75330f6..d4a4a3f 100644
--- a/conda_recipe/bld.bat
+++ b/conda_recipe/bld.bat
@@ -1,4 +1,4 @@
-cd ..\fortran\build_help
+cd fortran\build_help
 CALL gfortran -o sizes -fopenmp omp_sizes.f90
 CALL python sub_sizes.py
 
diff --git a/conda_recipe/build.sh b/conda_recipe/build.sh
index c2a91d1..eefecaf 100644
--- a/conda_recipe/build.sh
+++ b/conda_recipe/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-cd ../fortran/build_help
+cd fortran/build_help
 gfortran -o sizes -fopenmp omp_sizes.f90
 python sub_sizes.py
 
diff --git a/fortran/build_help/sizes b/fortran/build_help/sizes
deleted file mode 100755
index 2be4af5..0000000
Binary files a/fortran/build_help/sizes and /dev/null differ
diff --git a/fortran/build_help/sub_sizes.py b/fortran/build_help/sub_sizes.py
index 10aa3a3..e61bd6d 100644
--- a/fortran/build_help/sub_sizes.py
+++ b/fortran/build_help/sub_sizes.py
@@ -5,7 +5,10 @@ from string import Template
 def main():
     
     print ("Running sub_sizes")
-    result = subprocess.check_output(["./sizes"])
+    try:
+        result = subprocess.check_output(["./sizes"])
+    except WindowsError:
+        result = subprocess.check_output(["sizes.exe"])
     
     split_result = result.split()