diff --git a/python/envi.py b/python/envi.py
index cbfc82a..22c54ec 100644
--- a/python/envi.py
+++ b/python/envi.py
@@ -339,6 +339,8 @@ class envi:
     	outmask[i[0][0:idx], i[1][0:idx]] = self.mask[i[0][0:idx], i[1][0:idx]]
     	return outmask
 
+    def close(self):
+        self.file.close()
             
     def __del__(self):
         self.file.close()
\ No newline at end of file
diff --git a/stim/envi/bip.h b/stim/envi/bip.h
index 7262b11..3af4ea9 100644
--- a/stim/envi/bip.h
+++ b/stim/envi/bip.h
@@ -7,6 +7,7 @@
 #include <cstring>
 #include <complex>
 #include <utility>
+#include <algorithm>
 
 //CUDA
 //#ifdef CUDA_FOUND
@@ -1863,7 +1864,7 @@ public:
 		size_t ratio_i;
 		T* temp_spec = (T*) malloc(Z() * sizeof(T));					//allocate space to hold a single pixel
 		while(xy < XY){													//while there are unprocessed spectra
-			bs = min(XY - xy, nS);										//calculate the number of spectra to include in the batch
+			bs = (std::min)(XY - xy, nS);										//calculate the number of spectra to include in the batch
 			for(s = 0; s < bs; s++){									//for each spectrum in the batch
 				pixel(temp_spec, xy + s);						//read a pixel from disk
 				memcpy(&batch[s * S], temp_spec, S * sizeof(T));
--
libgit2 0.21.4