diff --git a/interval/intervalNe.cpp b/interval/intervalNe.cpp
index e72b1f7..fa31be8 100644
--- a/interval/intervalNe.cpp
+++ b/interval/intervalNe.cpp
@@ -32,10 +32,10 @@ interval interval_algebra::Ne(const interval& x, const interval& y)
         return {};
     }
     if ((x.hi() < y.lo()) || x.lo() > y.hi()) {
-        return interval{1,1,0};
+        return interval{1, 1, 0};
     }
-    if ((x.hi() == y.lo()) || x.lo() == y.hi()) {
-        return interval{0,0,0};
+    if ((x.hi() == y.lo()) && x.lo() == y.hi()) {
+        return interval{0, 0, 0};
     }
     return {0, 1, 0};
 }