diff --git a/pgtap/mincut/stoerWagner/compare_components.pg b/pgtap/mincut/stoerWagner/compare_components.pg
index 06c66e7999..0528ff6dd3 100644
--- a/pgtap/mincut/stoerWagner/compare_components.pg
+++ b/pgtap/mincut/stoerWagner/compare_components.pg
@@ -5,7 +5,7 @@
 
 BEGIN;
 
-UPDATE edges SET cost = sign(cost), reverse_cost = sign(reverse_cost);
+UPDATE edges SET cost = abs(sign(cost)), reverse_cost = abs(sign(reverse_cost));
 SELECT plan(6);
 
 PREPARE stoerWagner1 AS
diff --git a/pgtap/mincut/stoerWagner/edge_cases.pg b/pgtap/mincut/stoerWagner/edge_cases.pg
index df9cb34f21..c23f1c17cf 100644
--- a/pgtap/mincut/stoerWagner/edge_cases.pg
+++ b/pgtap/mincut/stoerWagner/edge_cases.pg
@@ -5,7 +5,7 @@
 
 BEGIN;
 
-UPDATE edges SET cost = sign(cost), reverse_cost = sign(reverse_cost);
+UPDATE edges SET cost = abs(sign(cost)), reverse_cost = abs(sign(reverse_cost));
 SELECT plan(2);
 
 SELECT lives_ok(
@@ -16,7 +16,7 @@ SELECT lives_ok(
 
 SELECT throws_ok(
     'SELECT * FROM pgr_stoerWagner(
-        ''SELECT id, source, target, cost, reverse_cost FROM edges id < 17'',
+        ''SELECT id, source, target, cost, reverse_cost FROM edges WHERE id < 17'',
         3
     )','42883','function pgr_stoerwagner(unknown, integer) does not exist',
     '6: Documentation says it does not work with 1 flags');
diff --git a/pgtap/mincut/stoerWagner/inner_query.pg b/pgtap/mincut/stoerWagner/inner_query.pg
index 7949160b03..c8e354d852 100644
--- a/pgtap/mincut/stoerWagner/inner_query.pg
+++ b/pgtap/mincut/stoerWagner/inner_query.pg
@@ -5,7 +5,7 @@
 
 BEGIN;
 
-UPDATE edges SET cost = sign(cost), reverse_cost = sign(reverse_cost);
+UPDATE edges SET cost = abs(sign(cost)), reverse_cost = abs(sign(reverse_cost));
 SELECT plan(54);
 
 SELECT style_dijkstra('pgr_stoerwagner(', ')');
diff --git a/pgtap/mincut/stoerWagner/types_check.pg b/pgtap/mincut/stoerWagner/types_check.pg
index f7266e4fdd..f54e6f9fab 100644
--- a/pgtap/mincut/stoerWagner/types_check.pg
+++ b/pgtap/mincut/stoerWagner/types_check.pg
@@ -5,7 +5,7 @@
 
 BEGIN;
 
-UPDATE edges SET cost = sign(cost), reverse_cost = sign(reverse_cost);
+UPDATE edges SET cost = abs(sign(cost)), reverse_cost = abs(sign(reverse_cost));
 SELECT plan(5);
 
 SELECT has_function('pgr_stoerwagner');