diff --git a/src/core/gcal-range.c b/src/core/gcal-range.c
index f9b4cde8..8360466a 100644
--- a/src/core/gcal-range.c
+++ b/src/core/gcal-range.c
@@ -507,12 +507,17 @@ gcal_range_compare (GcalRange *a,
                                 &start_timestamp_a, &end_timestamp_a,
                                 &start_timestamp_b, &end_timestamp_b);
 
-  result = start_timestamp_b - start_timestamp_a;
+  result = start_timestamp_a - start_timestamp_b;
 
   if (result == 0)
-    result = end_timestamp_b - end_timestamp_a;
+    result = end_timestamp_a - end_timestamp_b;
 
-  return result;
+  if (result < 0)
+    return GCAL_RANGE_BEFORE;
+  else if (result > 0)
+    return GCAL_RANGE_AFTER;
+  else
+    return GCAL_RANGE_MATCH;
 }
 
 /**
diff --git a/src/core/gcal-range.h b/src/core/gcal-range.h
index e967ba34..3c1b8373 100644
--- a/src/core/gcal-range.h
+++ b/src/core/gcal-range.h
@@ -51,10 +51,10 @@ typedef enum
  * GcalRangePosition:
  *
  * @GCAL_RANGE_BEFORE: range @a is before @b
+ * @GCAL_RANGE_MATCH: range @a is equal to @b
  * @GCAL_RANGE_AFTER: range @a is after @b
  *
- * The position of @a relative to @b. When the ranges are exactly equal, it
- * is undefined.
+ * The position of @a relative to @b.
  */
 typedef enum
 {