diff --git a/.editorconfig b/.editorconfig
index 56ad991..5ad5271 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -2,5 +2,5 @@ root = true
 
 [*]
 end_of_line = lf
-indent_style = space
+indent_style = tab
 indent_size = 4
\ No newline at end of file
diff --git a/configure b/configure
index ae27905..399c603 100755
--- a/configure
+++ b/configure
@@ -4,14 +4,14 @@
 
 set -e
 
-IMPORT=import
+import=import
 
 mkf=Makefile
-cflags=-I"$IMPORT"
+cflags='-I'"$import"' -boundscheck=on'
 objs='esv.o esvapi.o'
 srcs='esv.d esvapi.d'
 makefile='
-IMPORT    = '"$IMPORT"'
+IMPORT    = '"$import"'
 PREFIX    = /usr/local
 MANPREFIX = ${PREFIX}/man