diff --git a/envi/bil.h b/envi/bil.h
index a14e4ff..bd4186a 100644
--- a/envi/bil.h
+++ b/envi/bil.h
@@ -1,3 +1,6 @@
+#ifndef STIM_BIL_H
+#define STIM_BIL_H
+
 #include "../envi/envi.h"
 #include "../envi/binary.h"
 #include <cstring>
@@ -401,3 +404,5 @@ public:
 
 	};
 }
+
+#endif
diff --git a/envi/bip.h b/envi/bip.h
index 39ebeec..8a1e1c2 100644
--- a/envi/bip.h
+++ b/envi/bip.h
@@ -1,4 +1,5 @@
 #include "../envi/envi.h"
+#include "../envi/bil.h"
 #include "../envi/binary.h"
 #include <cstring>
 #include <utility>
@@ -462,7 +463,7 @@ public:
 			target.write(reinterpret_cast<const char*>(q), S);   //write a band data into target file	
 		}
 
-		header.interleave = rts::envi::interleaveType::BIL;  //change the type of file in header file
+		header.interleave = rts::envi::BIL;  //change the type of file in header file
 		header.save(headername);
 		
 		free(p);
@@ -478,4 +479,4 @@ public:
 	}
 
 	};
-}
\ No newline at end of file
+}
--
libgit2 0.21.4