diff --git a/src/ctxt.h b/src/ctxt.h
index 26d9800..d25ddb5 100644
--- a/src/ctxt.h
+++ b/src/ctxt.h
@@ -3,7 +3,7 @@
 #include "util/region.h"
 
 struct ax_ctxt {
-    struct rgn* self_rgn;
+    struct rgn* init_rgn;
     struct rgn err_rgn;
     char* err;
 };
diff --git a/src/ctxt/ctxt.c b/src/ctxt/ctxt.c
index ddf9879..ec104a6 100644
--- a/src/ctxt/ctxt.c
+++ b/src/ctxt/ctxt.c
@@ -2,7 +2,7 @@
 #include "../ax.h"
 
 /* -----------------------------------------------------------------------------
- * API functions
+ * API functions :: init / cleanup
  * -------------------------------------------------------------------------- */
 
 struct ax_ctxt* ax_new(void)
@@ -20,7 +20,7 @@ struct ax_ctxt* ax_new(void)
 void ax_free(struct ax_ctxt* ax)
 {
     ax__ctxt_cleanup(ax);
-    rgn_cleanup(ax->self_rgn);
+    rgn_cleanup(ax->init_rgn);
 }
 
 const char* ax_get_error(struct ax_ctxt* ax)
@@ -32,9 +32,10 @@ const char* ax_get_error(struct ax_ctxt* ax)
  * Internal 'ax_ctxt' operations
  * -------------------------------------------------------------------------- */
 
-void ax__ctxt_init(struct ax_ctxt* ax, struct rgn* self_rgn)
+void ax__ctxt_init(struct ax_ctxt* ax, struct rgn* init_rgn)
 {
-    ax->self_rgn = self_rgn;
+    ax->init_rgn = init_rgn;
+
     rgn_init(&ax->err_rgn, SMALL);
     ax->err = "";
 }