diff --git a/stim/envi/binary.h b/stim/envi/binary.h
index 5483a3d..3989ed2 100644
--- a/stim/envi/binary.h
+++ b/stim/envi/binary.h
@@ -274,8 +274,10 @@ public:
 		for(unsigned int i = 0; i<N; i++){
 			file.read((char*)(p+i), sizeof(T));
 			file.seekg(jump, std::ios::cur);
+			thread_data = (double)i / N * 100;
 		}
 
+		thread_data = 100;
 		return true;
 
 
@@ -297,12 +299,13 @@ public:
 
 		file.seekg(R[0] * n * sizeof(T), std::ios::beg);
 		for (unsigned i = 0; i < R[2]; i++){
-
+			thread_data = (double)i / R[2] * 100;
 			file.read((char *)(p + i * R[0]), L);
 			file.seekg( jump, std::ios::cur);
 			std::cout<<i<<"    ";
 		}
 
+		thread_data = 100;
 		return true;
 	}
 
--
libgit2 0.21.4