diff --git a/core/test/validation_test.jl b/core/test/validation_test.jl
index 1d6dd4ce4..97b782b6d 100644
--- a/core/test/validation_test.jl
+++ b/core/test/validation_test.jl
@@ -250,7 +250,7 @@ end
     @test logger.logs[3].kwargs[:control_state] == ""
     @test logger.logs[4].level == Error
     @test logger.logs[4].message == "Cannot connect a basin to a fractional_flow."
-    @test logger.logs[4].kwargs[:edge_id] == 7
+    @test logger.logs[4].kwargs[:edge_id] == 6
     @test logger.logs[4].kwargs[:id_src] == NodeID(2)
     @test logger.logs[4].kwargs[:id_dst] == NodeID(8)
 end
@@ -358,10 +358,10 @@ end
     @test length(logger.logs) == 2
     @test logger.logs[1].level == Error
     @test logger.logs[1].message ==
-          "Invalid edge type 'foo' for edge #1 from node #1 to node #2."
+          "Invalid edge type 'foo' for edge #0 from node #1 to node #2."
     @test logger.logs[2].level == Error
     @test logger.logs[2].message ==
-          "Invalid edge type 'bar' for edge #2 from node #2 to node #3."
+          "Invalid edge type 'bar' for edge #1 from node #2 to node #3."
 end
 
 @testitem "Subgrid validation" begin