diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..fcc92e8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+bld
+src/tags
diff --git a/src/wcwidth.c b/src/wcwidth.c
index a81c6ef..f97b879 100644
--- a/src/wcwidth.c
+++ b/src/wcwidth.c
@@ -65,8 +65,8 @@
 
 
 struct interval {
-    int first;
-    int last;
+    wchar_t first;
+    wchar_t last;
 };
 
 /* auxiliary function for binary search in interval table */