diff --git a/tests/test_plot/test_yaml_errors.py b/tests/test_plot/test_yaml_errors.py
index c9de1d5a..5a23111c 100644
--- a/tests/test_plot/test_yaml_errors.py
+++ b/tests/test_plot/test_yaml_errors.py
@@ -335,6 +335,14 @@ def test_error_wrong_type_2():
     ctx.clean_up()
 
 
+def test_error_wrong_type_3():
+    """ run_erc = number """
+    ctx = context.TestContext('ErrorWrongType3', PRJ, 'error_pre_wrong_type_3', '')
+    ctx.run(EXIT_BAD_CONFIG)
+    assert ctx.search_err("In preflight 'run_erc': must be boolean")
+    ctx.clean_up()
+
+
 def test_error_yaml():
     ctx = context.TestContext('ErrorYAML', PRJ, 'error_yaml', '')
     ctx.run(EXIT_BAD_CONFIG)
diff --git a/tests/yaml_samples/erc.kiplot.yaml b/tests/yaml_samples/erc.kiplot.yaml
index cf2a3f4a..6dd08047 100644
--- a/tests/yaml_samples/erc.kiplot.yaml
+++ b/tests/yaml_samples/erc.kiplot.yaml
@@ -4,5 +4,10 @@ kiplot:
 
 preflight:
   run_erc: true
-
-
+  filters:
+    - filter: 'Ignore C3 pad 2 too close to anything'
+      number: 4
+      regex:  'Pad 2 of C3'
+    - filter: 'Ignore unconnected pad 2 of C4'
+      number: 2
+      regex:  'Pad 2 of C4'
diff --git a/tests/yaml_samples/error_pre_wrong_type_3.kiplot.yaml b/tests/yaml_samples/error_pre_wrong_type_3.kiplot.yaml
new file mode 100644
index 00000000..6f1018bd
--- /dev/null
+++ b/tests/yaml_samples/error_pre_wrong_type_3.kiplot.yaml
@@ -0,0 +1,9 @@
+# Example KiPlot config file
+kiplot:
+  version: 1
+
+preflight:
+  update_xml: true
+  run_erc: 1
+
+