diff --git a/idris-commands.el b/idris-commands.el
index f7cb915f..00fb1525 100644
--- a/idris-commands.el
+++ b/idris-commands.el
@@ -229,15 +229,27 @@ A prefix argument forces loading but only up to the current line."
                  for h in hs
                  do (pcase h
                       (`(((:filename ,fn)
-                          (:start ,start-line ,start-col)
-                          (:end ,end-line ,end-col))
+                          (:start ,start-line-raw ,start-col-raw)
+                          (:end ,end-line-raw ,end-col-raw))
                          ,props)
                        (when (string= (file-name-nondirectory fn)
                                       (file-name-nondirectory (buffer-file-name)))
-                         (idris-highlight-input-region (current-buffer)
+                         (let ((start-line (if (>=-protocol-version 2 1)
+                                               (+ 1 start-line-raw)
+                                             start-line-raw))
+                               (start-col  (if (>=-protocol-version 2 1)
+                                               (+ 1 start-col-raw)
+                                             start-col-raw))
+                               (end-line   (if (>=-protocol-version 2 1)
+                                               (+ 1 end-line-raw)
+                                             end-line-raw  ))
+                               (end-col    (if (>= idris-protocol-version 2 1)
+                                               (+ 1 end-col-raw)
+                                             end-col-raw   )))
+                           (idris-highlight-input-region (current-buffer)
                                                        start-line start-col
                                                        end-line end-col
-                                                       props))))))
+                                                       props)))))))
                (_ (idris-make-clean)
                   (idris-update-options-cache)
 
diff --git a/idris-common-utils.el b/idris-common-utils.el
index d08b451a..be9b8c43 100644
--- a/idris-common-utils.el
+++ b/idris-common-utils.el
@@ -402,4 +402,12 @@ relative to SRC-DIR"
         (when (file-exists-p lidr)
           (make-link lidr))))))
 
+(defvar idris-protocol-version 0 "The protocol version")
+(defvar idris-protocol-version-minor 0 "The protocol minor version")
+
+(defun >=-protocol-version (major minor)
+  (or  (> idris-protocol-version major)
+       (and (>= idris-protocol-version       major)
+            (>= idris-protocol-version-minor minor))))
+
 (provide 'idris-common-utils)
diff --git a/idris-highlight-input.el b/idris-highlight-input.el
index 56f46a62..396ff202 100644
--- a/idris-highlight-input.el
+++ b/idris-highlight-input.el
@@ -60,14 +60,14 @@ See Info node `(elisp)Overlay Properties' to understand how ARGS are used."
       (widen)
       (if (or (> end-line start-line)
               (and (= end-line start-line)
-                   (>= end-col start-col)))
+                   (> end-col start-col)))
           (with-current-buffer buffer
             (save-excursion
               (goto-char (point-min))
               (let* ((start-pos (+ (line-beginning-position start-line)
                                    (idris-highlight-column start-col)))
                      (end-pos (+ (line-beginning-position end-line)
-                                 (idris-highlight-column (+ 1 end-col))))
+                                 (idris-highlight-column end-col)))
                      (highlight-overlay (make-overlay start-pos end-pos
                                                       (get-buffer buffer))))
                 (overlay-put highlight-overlay 'idris-source-highlight t)
diff --git a/idris-warnings.el b/idris-warnings.el
index bec2ad1a..927d6a9c 100644
--- a/idris-warnings.el
+++ b/idris-warnings.el
@@ -81,10 +81,18 @@ WARNING is of form (filename (startline startcolumn) (endline endcolumn) message
 As of 20140807 (Idris 0.9.14.1-git:abee538) (endline endcolumn) is mostly the same as (startline startcolumn)
 "
   (cl-destructuring-bind (filename sl1 sl2 message spans) warning
-    (let ((startline (nth 0 sl1))
-          (startcol (1- (nth 1 sl1)))
-          (endline (nth 0 sl2))
-          (endcol (1- (nth 1 sl2))))
+    (let ((startline (if (>=-protocol-version 2 1)
+                         (1+ (nth 0 sl1))
+                       (nth 0 sl1)))
+          (startcol  (if (>=-protocol-version 2 1)
+                         (nth 1 sl1)
+                       (1- (nth 1 sl1))))
+          (endline   (if (>=-protocol-version 2 1)
+                         (1+ (nth 0 sl2))
+                       (nth 0 sl2)))
+          (endcol    (if (>=-protocol-version 2 1)
+                         (nth 1 sl2)
+                       (1- (nth 1 sl2)))))
       (push (list filename startline startcol message spans) idris-raw-warnings)
       (let* ((fullpath (concat (file-name-as-directory idris-process-current-working-directory)
                                filename))
diff --git a/inferior-idris.el b/inferior-idris.el
index ac818c2e..7f73923f 100644
--- a/inferior-idris.el
+++ b/inferior-idris.el
@@ -66,12 +66,11 @@
 (defvar idris-connection nil
   "The Idris connection.")
 
-(defvar idris-protocol-version 0 "The protocol version")
-
 (defun idris-version-hook-function (event)
   (pcase event
-    (`(:protocol-version ,version ,_target)
+    (`(:protocol-version ,version ,minor)
      (setf idris-protocol-version version)
+     (setf idris-protocol-version-minor minor)
      (remove-hook 'idris-event-hooks 'idris-version-hook-function)
      t)))