diff --git a/Changes b/Changes
index f8804f1cc..45fe14e86 100644
--- a/Changes
+++ b/Changes
@@ -14,6 +14,8 @@ The contributors that suggested a given feature are shown in []. Thanks!
 
 ****  Fix config_rev revision detection on old versions.
 
+****  Fix false warning on backward indexing, bug1507. [Hao Shi]
+
 
 * Verilator 4.018 2019-08-29
 
diff --git a/src/V3Width.cpp b/src/V3Width.cpp
index f28bca861..d2f32a657 100644
--- a/src/V3Width.cpp
+++ b/src/V3Width.cpp
@@ -755,7 +755,8 @@ private:
                                    <<" outside data type's '"<< adtypep->declRange() << "'");
                 }
                 else if ((nodep->declRange().littleEndian()
-                          != adtypep->declRange().littleEndian())) {
+                          != adtypep->declRange().littleEndian())
+                         && nodep->declRange().hi() != nodep->declRange().lo()) {
                     nodep->v3error("Slice selection '"<< nodep->declRange() << "'"
                                    <<" has backward indexing versus data type's '"
                                    <<adtypep->declRange() << "'");
diff --git a/test_regress/t/t_array_backw_index_bad.v b/test_regress/t/t_array_backw_index_bad.v
index 8b6f9dd2c..626830448 100644
--- a/test_regress/t/t_array_backw_index_bad.v
+++ b/test_regress/t/t_array_backw_index_bad.v
@@ -15,6 +15,8 @@ module t (/*AUTOARG*/);
 
       array_assign[4:3] = '{32'd4, 32'd3};
       array_assign[1:-1] = '{32'd4, 32'd3};
+      array_assign[1:1] = '{32'd4};  // Ok
+      larray_assign[1:1] = '{32'd4};  // Ok
 
       $write("*-* All Finished *-*\n");
       $finish;